24 years is a lot of difference in age. It's not only the social aspects, in the long term there are many other serious consequences. When you retire, she will still have 24 years to work. If you have children, there's a great risk she will raise them alone. When she is in her prime sexually you will be old, ugly and physically limited.
It's easy to understand what's in it for you. Looking forward, have you considered what's in it for her?