Netherite is always worth it for the sheer fact that it is the ultimate endgame item and not just bragging rights. It's an essential item for your arsenta because diamonds just don't cut it anymore. The META of Minecraft has become one of getting gear that pretty much negates any sort of danger in whatever world you play. This is particularly why I do not enjoy the game as of its requirement.
No matter the world, no matter the gamemode, no matter SSP or SMP, the best gear is always going to pay for itself in dividends simply because it is the best. Toss on Protection, Feather Falling, Blast Resistance, have a stack of god apples, and totems, you'll never die again.