The most common impediment to urine flow in the male is abnormal swelling of the

In the male anatomy the urinary tract in particular the base of the bladder has the Urethra passing through a gland called the prostate. The prostate is a male specific organ that also additionally has the propensity to swell, and obstruct the flow of urine. This condition is called BPH or Benign Prostatic Hyperplasia, it is a relatively easy to treat. The prostate however also has the nasty addition of being a common sight of malignancy or cancer, which is why two forms of testing are done involving the prostate in older gentlemen; A PSA or Prostate Specific Antigen blood test and Prostate Exam (the stuff men don't ever really want to talk about).

Yes he thought they should be left to chance why, because he thought that was the best thing to do