Need for TRT in my 40's occasioned by substantial fatigue, malaise & even depression, VERY low DHT, erratic & as of yet substandard response to TRT, erectile issues and more.
I see no valid purpose for Propecia, unless one seeks to deliberately screw himself up. There is just too much of a risk, even if Propecia doesn't harm everyone. Just look at the Propecia help forums for a lok into what it can do.