We all have a lifestyle. Lifestyle is what kind of community you live in, how you get to and from work, whether you cook for yourself or buy frozen dinners, etc..<quoted text>
You trying to say you don't have a lifestyle?
Sexual orientation is a characteristic. It is passive.
If you mean to say self-identifying as "gay" or "lesbian" is a lifestyle, it is not. There is nothing in common among gay people other than sexual orientation.
Your fixation seems to be solely on linking gay men with anal sex and scat. Few people of any sort are into the latter, and not all gay men have anal sex - many prefer just oral. In any case, anal sex is not a lifestyle either - it does not really impact other day-to-day activities.