What I have seen is that cats just jump into it too quickly. Not willing to tell a pushy chick to STFU. I will do it when I am ready....if you cant wait...bail. It happens when they are younger as well.
If cats put more thought into it I think they would make better decisions. Its the only race when you can be first...and finished dead last at the same time.
I talk to cats for about 10-15 mins and I usually start shaking my head. Like son...you still like new pussy...so what the fakk are you thinking. This shit is like a light switch?
All races have difficulty with marriage. I was at a wedding years ago with some really successful cats...and they were like Dont do it.
Take your time. If you have a drop of doubt dont do it is my advice.