The amount of testosterone produced by the body in places other than the testes (like the adrenal glands) is going to vary considerably from person to person, deliveryman1994, so while I in no way doubt your experience it is also possible for another man to have a somewhat different outcome.
My very casual “research” seems to indicate that while penetrative sex post-castration (assuming an intact penis) is possible it is in no way guaranteed. Any man getting a complete removal of testicles needs to understand that normal sex may be off the table for good. Likewise, men with prostate surgery need to also understand that future lack of sex is a distinct possibility with such surgery. If they retain normal or near-normal function post surgery they are fortunate.