When you play Commando and you use your Q you leave yourself exposed at the mercy of anyone and you're pretty much an easy target.
In Shuttle Bay, that's barely a problem and I can understand why people tend to run to the base often after doing that. However, I find myself pretty bored of watching other Commandos do it 24/7. I'm not saying I don't do that, but I like to explore other tactics, like I don't know... trick the player who's hunting me and make it believe that I'm running to the base like what most people expect them to do and then assault them even while I'm still under the Hangover effect, or fly as high as I can to evade the heat of the battle while I give support with the BR. Things like that are way more effective at times and makes everything much more fun and interesting, even if I fail.
Then again, playing with Commando in maps like Moon Base or Training Arena is another story. You can't exactly "hit'n'run" as often and you're pretty much forced to fight when you less expect it. This motivates people to find other tactics, and it dispels the way of thinking that most players have when they play in Shuttle Bay.
I would also like to say that there's absolutely nothing wrong about running to base to recover from hangover, but oh God forgive me for what I am about to say, but @cyborg1... you're annoying as hell. You spend way too much time running back to base and then when you're there you spend a whole eternity doing nothing. That's not good, you're indirectly hurting your team while you wait not only for the Hangover effect to disappear, but even to wait further until Stim Pack is reloaded again. In my personal opinion, you're a very boring Commando to fight, and don't take it as a personal attack or offense, because I honestly believe you have the potential to become a really good Commando and I would like to encourage you to improve your playstyle and become more active in the match.