I sort of have that same trajectory, and I used to take it as a sign that i just mature slowly lool. Female here, always had a libido in hs, but around 23, it was like my body fully woke up. Suddenly my orgasms were leagues better, sex was so much more motivating than ever before, it felt like I was finally interested in the stuff I pretended to care about while in hs (when really i just wanted to like be playing tag or something most days).

No reason for it either! Basically just woke up wanting everything more. Def wouldn’t mind a surprise like that in my later decade, but i that’s a win-win either way i guess? If i want it, it’s a pleasure to satisfy, if not, then obviously I won’t care.