<human>: Give me a shortened version of the text

I ended a 4-yr-long relationship recently because I did not see a future between us. 

He was amazing to me, I love him desperately, we were very close, but I am at an age where I have to look ahead. I want children, and I don't see it with him at all--I don't think we would be good partners as parents, and even at 30, he has a lot of growing up to do. It's a gut feeling I have that I need to follow--and he thinks it's absolute bullshit. He is very "live in the moment," and I am looking ahead. Honestly, I don't blame him. If he had broken up with me with the same reasoning, I would be completely confused and pissed.

How can I help him understand why and move on with his life? I love him completely, but I don't want him to hold on to me. It's so hard to say "someday you'll understand," because that is patronizing, and maybe he never WILL see it the way I do.
<bot>: Ended mostly wonderful relationship because I'm getting older and didn't see a future together--how to help my ex accept this and move on?