I'm not sure caring about the whole "alpha" or "beta" thing is the right way at all to look at marriage. There are too many ways to spin the definition. I could say that being the head of a household is "alpha". There is nothing more "alpha" then having the responsibility of two or three or four people lives more or less directly in your hands. Yes, you don't have as much freedom, but thats not an analog to losing "alpha"ness to me. A majority of people socially regarded as alphas have huge responsibilities to others in their hands.
If your goal is to maintain thruought your life the interpretation of "alpha" that is used on these boards, then yeah marriage probably wont make you happy. More power to ya, a man needs to do what makes him happy.
If its a personal perception thing and you think that you lose too much of who you are if you get married, I can totally see where you're coming from. My personal feeling is that building a great family is my eventual goal. To me, being that 55 year old who's still running around picking up hot younger woman isn't as appealing as having a beautiful wife who cooks for me and is ready to go in bed, having healthy intelligent kids in college who are making me proud. And for the record I just as much want to have a successful career and be wealthy. For me, thats perfectly "alpha" enough.
:shrug: