There is another thread below on this topic but my question is a little different.  I'm in my early 50's.

I don't have a problem with ED at all.  When I get hard you could split timber with my unit.  

The problem I'm having is more of one of arousal.  When I was younger I only had to think of a naked woman and I got wood.  Sometimes many times a day.  Today I went in for a massage and the girl was rubbing my balls and doing all kinds of things to tease me and she was hot and I just did not get mentally aroused.   Usually what does it for me is kissing or rubbing a woman's pussy.  I think it has to do with if I know I'm not going to have FS then I don't get aroused.  Finally, when she grabber my unit to rub one out I got about half hard.  Partly because I could put my hand down her pants.    Again...I need very specific things to get me going.

I'm not happy with that.  Even when I get wood, mentally I just don't feel that stimulated any more.  I have desire, but don't get really horny any more.

My T level is around 340 which is low but not considered low T.  However, doctors don't know what was normal for me.  If normal for me was 900 then 340 might be considered drastically low.

I know arousal wise I'm not where I used to be even 1 1/2 years ago.

I would like to hear from anyone who was in the same position as me, and who got replacement therapy. about what kind of difference (if any) it made for you?  Was there any down side

Have you tried taking zinc and copper supplements (15-to-1 zinc-to-copper ratio)?

No.  I'm taking Horny Goat Weed though.

I could get hard fairly easily, but I needed more of the mental and physical stimuli.  And sometimes I could be right in the middle of having sex and my mind would wander and I'd start to go soft.  I felt my libido was going downhill from the very strong level I'd always taken for granted previously.  My doctor put me on a testosterone replacement therapy.  Real testosterone in an oil.  A measured amount is rubbed on the skin twice daily.  I felt it helped to restore my libido to some extent.  but I also use Viagra when I'm having a date and that's a huge help as well.  I'm 68 now and I like to say: I can do anything I could do at 25, just not as hard, not as fast and not as often!  Since I'm getting Wwaaaay more pussy now than I ever did at 25 I can't complain.  But some of the changes in sexuality associated with aging are real and at least for me, irreversible.  I'd advise you to obtain all the pharmaceutical help you can get and enjoy life to the fullest!

And that score is low for a guy. You could get a prescription for a cream or go get the pellets which might help. Yeah I am not a dude but see, as I said, 3 guys and we talk about it so I am privy to their results.

Clomiphene Nitrate.  Research it and ask your doc about it.  My diabetes doc put me on a half of a 25mg pill a day a year and a half ago.  In the first 3 months my T went from 300 to over 800.  Shit works.  Most doctors don't think about prescribing it to men because it's known as a drug that is commonly prescribed to women.  It's been around a long time.

Don't you mean Clomiphene Citrate?????

I'm 72. Up until a year ago I enjoyed powerful orgasms. Now I can't reach an orgasm...even with a very hot curvey blonde sucking on my dick.

My  Testosterone Value is 404.
My Testosterone, Free is 37.3 (I'm not sure what this is.)

Any suggestions or similar situation.

I'm in my late 50's and for the past few years have also experienced this. My low T was at about 170 when last checked, although "free testosterone" is the best indicator and I don't recall that value at the moment.  I need an intimate experience to get aroused that generally includes DFK or a very slow and sensual massage.  I think some degree of this normally accompanies aging. I'm in good shape, very active, not overweight and I eat right, yet I still have this issue.