The main thing that any cancer patient MUST do is to get educated about the disease, and study about all of the possible side effects of any proposed procedures. Oftentimes, a medical professional is going to be preoccupied with treatment, strategy, and other technical details so that they might not fully discuss the probably side effects and possible complications of any treatments or therapies that they may suggest.
You really owe it to yourself to learn as much as you can about your condition. Unfortunately, the time for learning and study is severely curtailed when someone is diagnosed with cancer. It is often a good idea for a patient to work with someone who can act as an advocate, or an assistant because they would probably be more objective and a bit less emotional and distressed with the situation.
With bladder cancer, it is often recommended that the prostate gland is removed. This can have catastrophic ramifications. The removal of the prostate can often lead to impotence and incontinence. This means that your sex life is basically over. In fact, it is reported that if the prostate is removed, the man cannot have an erection. If the vas deferens and/or seminal vesicles have to be removed, that makes the man sterile.
If you are going to undergo a removal of the bladder and/or prostate, make sure that you tell your physician to please leave the nerves intact so that you will at least have a chance at having a sex life after the procedure. There really are no guarantees with this type of procedure. You must also remember that side effects of this procedure may occur days, weeks, months, or even years after the procedure is performed. The maker of the video above said that he was still having effects from his procedure years later.
It might be advisable to check out all of your treatment options. Consider learning as much as you can about your condition and about conventional cancer treatments versus alternative treatment options. Study them all and learn as much as you can so that you can maximize your chances of getting cured.