1. Men tend to get more estrogenic as we age.
2. SHBG tends to rise as we age.
3. Long term shutdown can impact our feeling of well being as we progress in TRT.
4. Life tends to get more boring, uneventful and full of demands as we age.
Best thing might be to get some bloodwork done. I use privatemd. My doc, he is great but he messes up which tests to run sometimes. On average if your estrogen is 35 or so or higher it might be messing up your libido and making yo feel the way you describe.
AIs are kind of a crap shoot especially if you have a lot of old injuries. Personally, i get joint pain pretty quickly if I over do it. Sometimes a better approach can be to use a little masteron or Primobolan. I don't know for sure it they inhubit estrogen formation but it feels like I am knocking down estrogen and I get drier looking and sex drive improves. Masteron and Proviron work nicely. Primo less so but still does something positive.
A new love interest helps a lot with libido even if you have to use Cialis at first. A new exciting woman can be the best (or worst .. ie drama) change. Women are incredible.. Being with the right one is like turning the lights back on after a storm knocked them out.
Porn, I know the above was arguing for more romantic side of life and this might seem like the opposite. The main thing is porn can put images back in your head that drive your libido. sometimes as we age the images kind of slide away. Putting some back into the memory bank even if they are not your real life memories can help restore interest in sex and in pursuit of women.
Do something alpha. Doing alpha type activities builds an immediate aura and short term memory of confidence. Confidence and conquest makes us, as men, happier and healthier. Alpha doesn't have to be running out and play quarterback in an over 40 league. It can just be reading up in some subject and leading a conversation in that subject when it comes up in a mixed group. Of course, if you are an ex-martial artist going back down to the dojo and dominating or holding your own is great as well.
It's not always a drug that is needed. Sometimes it's the mindset. WE all get into a slump now and then. For me sitting in the house with my wife pretending to like her shows puts me into a depression. But if I hit the gym a little more, hit the dojo some, and go out once a week with friends and shoot the shit and maybe flirt with some pretty women I feel a whole lot better.
My 2 cents,
G