HRT caused me to loose the will and interest to play video games <for the most part> but it hasn't hampered my mechanical or electrical abilities...
I still fix electronics, and cars, and do HVAC repair work... Honestly I'm better at it now because I want to actually FIX things instead of patching them back together temporarily so they can hold to be fixed LoL.
My only problem anymore is... having to find someone else to do the hard work... breaking stuck bolts loose, and heavy lifting and the like... I've lost the majority of my muscle mass.... I'm still nice and toned <upper body> from playing the drums... but loosing 10in in your arms is 10 in lost in your arms....