I don't have a problem with age difference, it's not meant to be about age, its meant to be about how you connect with one another.
So long as you are both able to accept that the older one in the relationship is far more likely to die well and truely before you, and that there is an increased chance of you drifting apart from moving into different phases of life that the older one has likely already seen and passed, then all is groovy. I mean when it comes down to it, it's your life you have to live, so you may as well live how -you- want to, not how everyone else expects you to.
Personally I have a problem with people who have children when they are seeing someone who is well and truely older than them. Simply because it's so incredibly selfish. I know a man in his 70's with a daughter younger than me, and I'm 17. His spouse died in a car accident and now she's left with a father who is transitioning into the last phase of his life.
Other than that! You've every right in the world to be as happy as everyone else in a relationship
Thats my longwinded opinion
But you all should be used to that by now.