I hope you're ready:
 
I AM BIASED I HAVE A TECHNICAL PLAYSTYLE
it hurts to see people buy bedrock because they pay 50$ for a [____ing] starter pack
in-app purchases
inconsistencies in fonts
Minecraft logo smooth
skins blink
Minecraft marketplace
confusing UI
no hardcore mode
no spectator mode
full-bright particles
stopping immediately when stopping flying
when touching the ground you don't stop flying
laggy menus
such little servers
no double wielding things other than shield
fire, portal, and other screen overlays look like you're in a block
when hurting stuff the red is brighter than in java
water looks bright
arm moves weirdly
the toolbar is semi-transparent
when placing blocks the outline appears before the block
the outline shows through transparent blocks
hurt tilt looks too slow and comes from a different direction
placing/breaking blocks is way too fast when moving
chat and commands take up the entire screen
execute and other commands are lacking updates/features
no, debug menu or shortcuts
having to leave the world to enable/disable texture packs
placing blocks ahead of you in mid-air
odd movement in the water
hunger depletes too far
jitter when going far away from spawn
stripe lands
bad creative menu design
pluses in the menu
no advancements
particles don't draw parallel to the screen and appear in a circle formation
no version select
Redstone is broken and random
chat is at the top
build limit in nether is only 128
have to leave the world to toggle fancy leaves and stuff like that
no custom worlds/debug/amplified
command blocks suck
commands don't have colors
no nbt data in commands!!!!
Redstone/rails underwater
vignette is low poly
I can't see arrows of skeletons when up close
skeletons shoot really fast and have no animation
explosion particles look different
beehives are rarer in bedrock and bees exit from all sides unlike java
zombies don't spawn with pumpkins on their heads on Halloween
wet sponges turn into dry sponges when placed in deserts
Lighting Ice on fire in Bedrock uses up durability but doesn't light
in bedrock, villagers don't give you lapis when you have hero of the village
in bedrock its called "Redstone" not "Redstone dust"
in java its "Quartz pillar" in bedrock its "Pillar quartz block"
Cacti can be found in Bonus Chests in Bedrock but not in Java
Wandering Traders sell Cacti for 3 Emeralds in Java but 5 in Bedrock
In Bedrock Infested Stone takes longer to break than normal Stone
grass blocks fill up composters in bedrock
you can push furnaces, chests, etc in bedrock
In Bedrock Netherrack spawns under floating portals unlike Java
in bedrock enchanting tables emit light
in bedrock, you can't enchant a hoe with an enchanting table
It's called Enchanting Table in Java but Enchantment Table in Bedrock
In Bedrock Cleric, Villagers sell one Glowstone Dust for 4 Emeralds.
In Bedrock Edition, Leaves with Top Snow have Snow particles.
its called a "Melon Slice" in Java Edition, but "Melon" in Bedrock
Ravengers attack turtle eggs in bedrock
In Creative Mode, in Java, any item can be enchanted but not in Bedrock
brick block in bedrock is brick in java
Torches can only be placed on Honey in Bedrock Edition.
there are glitched red wolves in bedrock that can be dyed
you could only give fish to a wolf in bedrock edition
wolf hitboxes are smaller in bedrock
mycelium can be made into paths in bedrock
spawners are smaller than a full block in bedrock
spawners emit light in bedrock edition
spawners are called monster spawners in bedrock
Jukeboxes can be played using hoppers in bedrock edition
fish drop bones in bedrock
barriers can be waterlogged in bedrock (really useful)
rude words in bedrock get hidden
sugar cane grows slower in bedrock
dragon eggs are in the creative inventory in bedrock
foxes have double the health and drop more XP in bedrock
end portal in bedrock end portal frames in java
bedrock end crystals have a different model and hitbox
being inside of a block looks different
XP farms are trash
inventory animations
not as many game rules
no mods or clients
no server plugins
2d items when dropped
bedrock is based on java at its core
you can grow sugarcane with bonemeal
you need a wooden shovel to craft a boat
you can craft leather horse armor in bedrock
item frames in bedrock are a block other than an entity, which sucks
baby squids
you can place blocks directly under you in bedrock
you can place dyes in cauldrons
you cant make a custom shield in bedrock
hitboxes act differently
trapdoors don't make you crawl
you can't stand on boats
you cant put anything apart from shields in your off-hand
when you place a door underwater it doesn't make an air bubble
the toolbar is higher up than in java
gravity blocks are Fullbright