My children killed my bachelorhood more so than the my ex-wife or current girlfriend. I was married prior to my first son and still did things "my way". Could be why I'm divorced.
The things I miss being able to do are, going to the gun range whenever I wanted, go to the movies, go out to a bar without days of planning before hand.
I don't mind being tied to someone and tend to think I'm a better person with my current girlfriend. I do miss being able to do whatever I want when I want to and that's more due to my responsibility to three children then it is to my responsibility to the "better half"