Monster Hunter is a tough sell for some people. I was not able to get my local friends into it. They were turned off by the difficulty and not willing to keep at it, which is a shame because it's a load of fun after you get past the first 10-20 hours of learning the game.
I've determined that I am never going to be able to sell people on the game. I'll just recommend it, let them try it, and see who gets hooked on their own.
I have been playing it less and less lately myself because I've reached the limits of my hunting skills solo. I know there are people that can hunt Monoblos and the like solo, and I'm just not one of them.
I have no problem taking down Gypceros, Khezu, Plesioth, Hermitaur/Cenataur, Blangonga and their variants. I can down Gravios because he's hella easy. Anything after that has proven too difficult thus far, so I really need other people to play with.
I am hoping the PSP to PS3 wifi connection works well for MHP Unite whenever that comes out!