1.9 introduced so many new features that it really isn't the same game anymore! New structures/enemies/blocks is fine, but the entire combat/inventory system was changed and that sucks. It's a fun game to explore, & 1.14 has cool stuff, but it doesn't feel like Minecraft anymore.
I just wish 1.8 was still maintained as "Legacy Minecraft", when the game was still sort of about building instead of exploring. (1.5-1.8 was the best for online)