wouldn't some testo gel or some shit like that reach those levels? or do you prefer injecting?
I doubt I will live to see 40-50, but if I do. Its hrt time 
Dude, injects are easy, painless and a matter of minutes, who in their right mind wants to smear some ugly gel on themselves, you have to be careful no one else touches it and so on...
Injects are the way to go, clean, easy, fast. Once a week. Also better than orals which you have to carry around, take them 2-3 times a day, annoying shit.