"Chastity": A Kink or a Lifestyle?

Many people call MC a kink… is that truly the case, particularly between two adults who agree? I see a kink as something I fantasize about or rarely do, but when this becomes reality in a partnership—where the man gives up his sexuality, urges, erections, and orgasm to his partner and lives out this ‘kink’ around the clock for long stretches or forever—is it still just a kink or has it become a chosen lifestyle that both enjoy? When we “miss being caged” or welcome chastity into our daily routine as our partners do, it stops being merely a sexual expression/kink/fetish. It becomes an accepted part of who we are; we shift our mutual sexual boundaries. Just like moving toward a FLR or WLM where the couple agrees to alter their power dynamic—is that relationship type a kink or a lifestyle? If not, then surely longterm or permanent chastity must be viewed as a lifestyle rather than a temporary fantasy or play?! That is my question. (Hope this is posted under the correct section)