I have been of TRT for about 8 years now (the last 3 years on inyectables), I have not cycle off since then, problems with side effects have been relatively very mild to non-existing (a pimple or two) , since I keep it to the replacement levels of 200mg every two weeks (same as you). I just merely replacing what I lost, so it bring me back to where I was when I was younger. I will be trying nandrolone as therapy as well for pain in my joints and it will be kept at therapy levels, since I have no intention to look like Ronnie Coleman am good to go with the minimum dosages. As fertility goes for me, non an issue I already past that and at my age I do not think I want start raising kids again (but you may want to make a deposit in a sperm bank just in case). As you mention TRT is a lifetime commitment and pretty much like it how I feel since I got into TRT (I was extremely miserable before it). Hope this helps and good luck to you!