But here's the thing, none of us knows if 50+ years of TRT is survivalble.

I would also caution you that so far your approach has been completely wrong: what you should have done (and could still do) is to determine if you are primary or secondary (would need LH levels) BEFORE starting to supplement with testosterone. Are your age there are other alternatives to just injecting test all of your life (not to mention the 10,000+ holes in your skin ).

Test levels of 1200 with E2 <20 may well be a formula for future problems. Bone growth/cardio protection/brain development requires mid-range estrogen levels. "Older" guys might get away with subnormal values, it's unlikely you will.

Anyway, something to think about.