I'm 31, and left behind bad friends when I got married. the ones who kept trying to get me to be the old single me needed to go.

I think cycling will only hurt you if you make your obsession with the next ride greater than your commitment to your family.

My wife is in early pregnancy, and after we found out she was pregnant with our second, i became obsessed with loosing weight because the thought of chasing two kids at nearly 400lbs was giving me migraines. obviously this change of pace was unsettling to her at first (we are headed different directions) but once we sat down and discussed it and put all our cards on the table its something she wants to do as well after she has the baby, and is already adopting a healthier diet while pregnant.

one thing I have seen happen with other hobbies healthier and not, is that if you are in a questionable or unfit relationship, committing to other activities and learning more about yourself can bring you to change those things. I think my point here is, if you are in a solid marriage with open lines of communication, changing your life for the better is not something you need to worry about. if your not then if it wasn't cycling it would be something else.

added- probably the thing she likes least is I joined BF and now am toying with expensive bike possibilities, but she understands that I'm looking for the road to where I want to be, and many here have found it and are looking as well.