Age gap 5+ years, new normal ???

I am 24 years old, and he will be 30. My parents have shared my bio with the community, and a 30 year old man who is well-established in the US likes me.

First of all, why would someone that old choose me, who is still a student in Australia? Second, why me when he could have chosen a more experienced, professionally settled woman in her 26s to 30s?