I am on Testosterone Replacement Therapy and some HCG added in. For most of us, all those side effects will not happen as 'normal' doses just bring you up to normal levels.
'Roid monsters up their levels way beyond what's natural.
My testosterone simply hovered in the midline of what's ok. It wasn't amped up or anything.
I didn't have sex drive problems on or off it, my problems were motivation and energy levels.
When my levels were in the proper zone I felt like a teenager again and always ready to go / do something / learn something / etc. I was more focused and alert as well.
I like Killster's glutamine recommendation. I always include it in my supplements.
HGH is a different thing in a way, but if you can find a way to do it under a physician then by all means explore it. That's the key, regular blood samples/checks to see where you are at.