Waterbizkit
Explorer
I bet you've never DM'ed a session in your life. You realize how much work we put into running a game, and then you can't even be bothered to take notes, or take an interest?
Lazy players are the worst.
It's not your players responsibility to be invested in your world as much as you are. Expecting them to be is probably one of worst mistakes a DM can make.
Crafting detailed worlds and letting our imaginations run amok is one of the greatest parts of being a DM. You get to breathe life into your creation, where every location has a reason to be there and every NPC has their own deep personality and daily routines. There's even a long and storied history to be revealed as the secrets of ages past are laid bare. The world lives!
For the love of god don't expect your players to give a censored. It's great when they do, but don't expect it and don't treat them as lazy, disrespectful people because they're just not that interested. Of course you're interested. Of course you care. You made it. Don't expect others to share that passion just because.
And even on a smaller scale, with regards to the effort required to run a session, never mind craft a world, I look at it the same way to be honest. Yes it can be a lot of work, but it's work you chose to do. At the end of the day this is a game and expecting people to take it as seriously as you might is unrealistic.
However, at the end of the day what all this points to is that each of us needs to find the group we fit best with. We all play the game in our way and finding those who view it the same way is key to the enjoyment of everyone. I fit with my players like a glove. Reading this thread, some of you would lock the doors with my players inside and light the house on fire.

Anyway, I had more to say on the OPs subject since my last response was (mostly) tongue in cheek, but alas... work demands my attention.