Mrs. Edge,
I am only 25, but I am married and in a similar situation as you in terms of job, fun marriage, U2 and Edge obsession...
I feel the same way you do, very conflicted about if and when to have children. My family honestly thinks I will never have any, and I think they may be right. However, the reasons I have for not wanting children probably don't apply to you...am I going to get to a point here, or what?
Anyway, one of the reasons I haven't ever wanted children is the loss of my own freedom, aka being able to travel, go back to school, move around, etc. My younger sister, though, just had a baby in April and she has totally debunked this myth for me.
There are plenty of people who refuse to go out and do things after they have children. Some of my best friends are so boring now that they have kids because they never want to go do anything. It's not that they can't, they just won't. If we get together, I have to go see them, because they won't leave their own houses.
My sister Sara has led me to believe that this is total crap, however. If there is something she wants to do, her son goes along with her. When my parents drove from Oklahoma to Georgia to see me graduate (about a 20-23 hour drive), she wanted to come so she brought her son with her. Sure, it was trying at times, but she had fun, we took him to the beach, and it worked out well. Sara is also coming to visit me next week and she's bringing her son with her for the long trip. Although Sara is still in school, works, and has a kid, she has not let it slow her down at all. Very admirable, and she's still the fun person she's always been, willing to go out and do things. The only difference is, now someone else tags along. I think it has been really helpful for her son, too. He loves to be held by anyone and is used to riding in the car and being in new situations.
Anyway, my point is, a child doesn't have to slow you down to a standstill unless you let them. I can't think of one instance where Sara has not been able to go and do something because of her son. She either takes him with her or leaves him with a family member for a few hours (we all love to babysit for her!). No big deal. It almost makes me think I could handle it if the time comes.
Anyway, good luck with your decision. My parents had their children when they were in their early 20s. Now they are in their 40s, all the kids are out of the house, and they are having the best years of their marriage so far! Also know that I know several couples who have never had children and never will. They are very happy with their decision, so that's always an option too, no matter how much pressure others may put on you. Good luck! Hope my ramblings are helpful.