I get pumped up a little more right before a tournament also. I look at it as a chance to compete against a different group of bowlers. Of course, the bigger stage the tournament is on the better. I still get excited going to the ABC nationals dreaming of some day winning an eagle. Realistically, it probably won't happen, but I'm still going to aim high.
Even though I consider a big tournament like the ABC nationals a big deal, I still enjoy and respect a competitive scratch league. So far, I have not led any scratch league in average for a season or been on a team that won the league. That leaves room for improvement.
NevadaBowl, hopefully you don't find yourself bored with leagues. If your current leagues do not excite you, then try to move up in competition until they do. I assume there are several great bowlers in Vegas to measure yourself against. Until you can beat them regularly, make that a hot goal that pumps you up like tournament competition does.