Cancer makes you effectively sterile if not treated, read dead. Cancer treatment can most certainly make you sterile either directly such as with orchiectomy after testicular cancer or indirectly from radiation or chemo, especially the blood cancers, lymphoma and leukemia.
You can be a step-dad without adopting.
I’ve looked up some of your previous posts. You are smarter than the average poster. I would love debating you but admit it, you were trying to be funny, then in a rather lame fashion tried to justify it.
You can’t legally be a step dad without adopting the thing.
and here’s a hint — (one troll, one not troll I’ll let you figure it out).