Personally I prefer to play with mods but I always played vanilla withoit keep inventory, but if someone wants to play the game without stressing out about losing stuff or progress, especially if they're young or have only a short time to play due to being an adult having a job, we shouldn't shame them for it.

Being a young adult now and having less and less time to play my games has showed me just how horrible it is to finally get time to play your favorite game a little bit, only to lose basically all your progress when you die and your items dispawn/you don't find them, I know there are adult players who have more time or find enjoyment in challenging themselves of losing everything, but there are also others who can't and it's ok.

In my opinion one of the most beautiful things about MC is how customizable it can be, you can add mods, rescource pack, shaders, you can even mod the menu, and even vanilla mc has so many fun settings for everyone

You like more challenge? Here's hardcore mode, you just want to chill and build in survival? Here's peacful mode, you want all the blocks to be at your disposal without having to grind for them? Here's creative mode, you want to make a map for your friends without thrm cheating and brsaking blocks? Adventure mode, you don't like structures? You can turn them off, you don't like the new updates? You can play older versions and so on.

The game literally says it's YOUR sandbox to play, you paid for it, as long as you're having fun then it doesn't matter what anyone else thinks.

I might try a keep inventory world tbh, since I got a short time to play it currently, say whayever you want about that.