Yup, this.
It's the age-old division between the hard-core hobbyists in a given field, and those with a passing but not all-consuming interest.
If you think you might be in the second category, try to find a group with like-minded people. IME, most groups will be inhabited by people exclusively in the first category (I'm one of 'em), and they tend not to be that accepting of people in the second category (who might be perceived in the same way as "fair-weather friends"). But as you can see from some of the responses on this board, there are groups and GMs that don't mind, and even plan their gaming on this basis.
Good luck!
Cheers, Al'Kelhar
I agree. The ideal for a Type 2 player would be a group of Type 2-er friends who just play D&D etc on an impromptu pick-up basis when they have nothing better to do that night. A Type 2-er in a Type 1 group is a recipe for irritation.
Actually, what I've tended to see is players & GMs who think they're type 1, they want to play in a "serious, reliable, long term game", but are actually flaky, and frequently cancel or forget sessions. The most annoying are GMs who see nothing wrong with cancelling a session at the last minute when something better comes up or they just don't feel like playing that night. When you have 5 players who are working adults, and have gone to considerable effort to schedule their lives so they can play in your game, that is not acceptable behaviour IMO.