Losing urge to cum

I've been a very active chastity user for the last few years (almost 24/7). I usually relief myself by jerking off once in 1-2 weeks. But now the feeling for the relief have been decreased. I've noticed this when I take the chastity off to stroke my semi-hard cock and then questioning myself: "do I really need to cum?". The answer is "no, i don't" and then I put the chastity back on.

I'm not on HRT or anything but I think my natural testosterone levels are very low. I still feel horny and happy. :)

Does anyone else have similar experiences?