Why do female have more UTI (urinary tract infection) than male?

Most explain that female has short distance between urethra and anus. Therefore women should wipe from front to back after going to the bathroom to avoid the urethra being contaminated by bacteria from the anus.

I believe all women do the above recommendation, but infection rate is still higher.

Therefore I don’t agree the above theory with following reasons.

1.    If we believe this theory, God make women imperfect.

2.    While all women do wiping out as they learned, women’s infection is higher. This means an explanation of short distance is not a right theory. One explains this way and everyone just believes it without further investigation.

What could be a right answer?