Hey man, sorry to see this is all getting to you so bad. A few things worth considering though;

1, The purpose of marriage is not to have children. Plenty of married couples never want or have children. The purpose of marriage is to make a commitment to spend the rest of your life with this one person who you love above all others.

2, Yes, males are more likely to pass on the condition than females are by a significant figure. But at the end of the day, it's only a chance. People with HIV have a chance of passing that on to their children, but a lot of them still have perfectly healthy children every day. (I realise the two are completely different, but I'm just trying to demonstrate that a chance shouldn't be enough reason to rule it out for posterity.)

3, If you do happen to have a child with an ASD, you will be more able to spot the signs early on. Doing so means your child may not have to face as many of the challenges as you or some of the rest of us did by not getting diagnosed until adulthood.

4, Personal point. If you really want a child, and don't want to face the risks of passing on your ASD to your child, why not adopt? We have an ever increasing world population, it's actually scary how fast it's increasing (these are the sorts of things I panic about at 3AM and lose sleep over). To help with population control, people should adopt more and give birth to new children less. There are millions of children living in foster homes or shelters because their parents gave them up, these children would be grateful for a loving and supportive family whether they are blood relations or not. I decided long ago that if I were to have a child I would adopt.