Ye, I agrre.I'm 46 and still do pretty well for myself. At 40 I was killing it.
"Old" is more state of mind than a reality. if you take good care of yourself then it not bigger deal. Loads of chicks want a more seasoned dude than 22-26 year old that has not got his sh'it straight yet. Actually they prefer it from my experience.
But if you think to yourself "I'm old now", then you're fu'cked because that will be your really. And as mentioned here before; if you have dad bod = you're fat AF, never hit the gym or rarely, have bad eating habits, have shi'tty clothing style, shi'tty lifestyle/friends, work that you hate etc. etc. then you really need to do something about it because nothing of that will get you into your game zone aka. reaching the full potential of you as a person.
You need to chase your own excellence and become "the greatest" as Muhammad Ali used to say.
Fun fact; Statistically you're still considered young until you hit 48 lmfao.