Now that I'm closing in on 30, I've begun noticing that I haven't really felt strong emotions about anything in years. I don't really feel joyful or optimistic about anything. I don't get butterflies when I see a pretty woman on the street or when a woman at work flirts with me, I don't really have much of an emotion reaction when listening to music, I don't feel any sort of thrill or excitement from new experiences or meeting new people, the prospect of getting married or falling in love doesn't exhilarate me in any way, etc. I sort of just feel numb and indifferent towards everything. It saddens me to think about, because I seem to remember the world used to have much more color when I was younger.
I'm asking this question here because I genuinely can't tell if this is all just depression/anhedonia, or if this is simply part of getting older.