Different places/cold feet

My husband and I have been married for 7 years I am almost 30 and my husband and I have talked about kids...let me rewind a little. I have always wanted to adopt. Since I was a kid I knew this was what I wanted in a family. My husband was on board when we got married we talked about it at length before we got married because it was a make or break for me. Now that we have been married for a while and we are in the adoption planning process my husband brings up that he would really like one of our own. It has taken me two years to process and decide I am being selfish if I with hold this from him if it is something I  capable of- meaning I can have kids as far as we know. As I am approaching thirty I feel the time crunch of kids and all our friends have two/three year olds which we enjoy very much but we can go home alone at the end of the day. We travel a lot we both work a lot and our spare time is gym time. We are approaching the three month block we have agreed to try to conceive if we don't then we try three months next year then we hopefully will be reopening the adoption process. This is turning rather lengthy. I apologize.