For me it's changed as I've got older. As a young guy I mostly topped, but soon also learned the pleasures of bottoming. That made me very versatile always depending on the other guy(s) which position to take. In the last 2 decades I've mostly bottomed as that was what worked best in my relationships (don't slut around anymore). Nowadays being more than 70 years old I almost only bottom. Yes, I'm stil sexually active and and I love giving pleasure to my partner.
Nationality, race or type of person has nothing to do with top, bottom or versatile. I've fucked and been fucked by Asian, African, Latin and Caucasian and enjoyed them all.