I imagine your parents love you. If they have the normal love of a parent for their child, your disappearing would likely cause unending heartbreak. When it comes to intense human relationships, such as parent and child, there are good times and hard times. I think all parents worry about their children and want what is best for them. The thing I think any parent wants most for their children, is for them to be happy.
For me, having grandchildren doesn't come in to it. I just want my children to be happy.
So, if you want to make your parents happy, maybe the best way to do this (possibly!! !) is to look to find self acceptance and inner contentment. I am sure you have many exceptional qualities.