Anyone on testosterone replacement therapy (TRT) not using B12 is in worse shape than those who do. Any smart doctor would know this. But to each his own. The top endo's in the country prescribe B12 as part of the protocol, as a matter of fact, many knowledgeable folks use B12 instead of water to mix hCG. You're doing your body a disservice by not using B12. No question about it.
Again, as I explained to you in great detail, B12 does not produce red blood cells, I'm not sure how else to explain it aside from showing you the science behind it. When I run heavy cycles I inject 1000mcg of B12 daily on cycle. RBC's don't magically start coming out of my ears.