Dear girl.Its genetic. You already know. 50/50 your kids will have it. So do you want to tell a future husband each of his kids will have a 50/50 chance of holes in his children's hearts ? Or you can be a loving parent via adoption, and avoid the problem for your own biological children. Or marry someone with the same problem, and guarantee it ? If you don't have children, you remove this bad gene from a small part of the global gene pool.Be a loving adoptive parent when that time comes.