I'm not bored with the game itself. The reason why I find it boring these days is because of the lack of veteran players, and not only just because they are more skilled, but because I've known them longer and knew them better. Most of the people who play these days are random newbies who only play shopper, mole, and intermediate. You never see anyone play Team17, Elite, CTF, WFW, BR, etc. Lots of them do not speak English either, which really sucks.
I think that if the game were active and full of vets I'd probably never get bored with it... but then again I've taken breaks when it was active, so maybe I'm just romanticizing a bit.
I guess I just need to find some newer multiplayer game that I can get addicted to.