My children are 7 years apart, which I do know is still a big difference than 10+. I ended up doing the injectables too and many IUI's. I struggled with the same questions toward the end. There have definitely been moments since my daughter has been born that I have remembered the ease of a single older child. However, it's not just that I love my daughter to pieces when I say this, all the new hassle is worth it every day. I felt guilty at times after all we went thru that I missed the ease of my life with just my son and husband. But it's really just when I am tired. The truth is my husband and I have talked about this. We both realized that the benefit of the age difference is actually pretty great. First off, you know all things pass. It makes some of the day to day stuff much more manageable. Secondly, yeah the first few years are exhausting, but as I am sure you know, as the kids get older it really does get better. When I hear people say how hard it is to see their little ones growing up, that they miss them as babies, I think the opposite. I love my son as he gets older and becomes more of his own person. It's such an amazing gift to watch them become real people. So I always think of it like this.. 3+ years of inconvenience ( you know what I mean), for 40+(at least, I hope) of knowing them. Now I don't mean to say that the age difference was our choice, but it's great if it's what you have. I know there are also so many great things about children being close together, but so far i haven't been able to experience that.
All in all, whether you choose to go through with it is obviously your decision and a very personal one. I just thought I would share my side. I think thru the infertiltiy of the second you will constantly be questioning whether it's worth it, whether you should be happy with what you have, whether in the end you are really happy with where your life is right now. But I think it was worth all the pain, heartache, failed iui's, ultrasounds, negative HPT's, to see my son be a big brother and to hold my daughter every day. I can't imagine my life without her now.
Okay with that being said... if we had never had my daughter.. being a mom to one would have also been pretty terrific. I could go on and on, actually I kinda have, but just wanted to make sure I didn't sound like adding to your family is the only way either. Hopefully I explained myself well... somewhere in all the rambling I am sure I had a point.
-krista