I'll admit two things before I begin. First of all, my skill level is certainly not high enough to be any sort of swing vote in terms of wins. Second, I tend to play CT almost exclusively. Ina ll honesty, the reason for playing CT is that I like the M4. And by like, I mean that I feel naked when I don't have one in my hands.
Personally, I prefer playing the cs maps as a CT, primarily because it does require the entire team to work at the game. We can't just camp and wait for the other side to show up. We also don't have the luxury of being able to get into an area, plant a bomb, and let the clock fight the battle for us. No, we have to bust heads and stay alive all the way to the hostages, and all the way back. In fact, the journey back is often more difficult than the journey there.
Occasionally the situation comes up where we're either owning the match, or the more common, we're getting fustigated. I can't say this ever really bothers me, primarily because of the blowout rule. If we get beaten by 10 rounds, the map changes. Then, invariably, the teams reorganize, primarily because a lot of regulars just hit the auto-assign button, and let CS do the magic for them. The only sort of unevenness that does bother me is when the raw numbers are very uneven. A 12 vs 8 run is never particularly fun when you're part of the 8. Auto-balance kicks in after a round or two, and some of the regulars or admins are usually kind enough to switch to fill the gap. In all honesty, I'd be happy to take the bottom of the opposing roster just to even the numbers.
It can be frustrating to lose on a constant basis, certainly, but it is all the more frustrating when you are literally outnumbered before you start. Outgunned and outskilled I can deal with, but it's the outnumbering that does annoy me at times. By the time I've noticed an outnumbering against the opposing team, usually someone else has switched to cover the gap before I could. This is good, and it's something we should be alive to on the servers. It can't be enforced any more than the auto-balance does, and that's fine.
In general, if you're playing for fun, and not for the scores, then the game is enjoyable no matter how many or few kills you get, and how many or few rounds you win. Even teams are nice, but the worst case scenario is that you have to deal with a stacked (though inadvertently) team for 10 rounds maximum. However, it's far more fun to rally and, as Fatty said, make them work for the victory.