Because he was the Commander in Chief and adultery is a crime in the military. Senior officers get fired all the time for screwing around. He lost his moral authority to be CIC.
If you don't think he disgraced his public office by having an intern give him a blow job in the White House, while he was married, then lied to the world about it, then we just have different standards.
Yes, but he's not in the military. He's not subject to the UCMJ. He doesnt have to have "moral authority" to lead, as his personal life is between him and his wife. You dont know, could be him and his wife dont sleep together and have an understanding, many people do that, and yes, many in the military do that for benefits.
The ONLY thing I disagree with was that he did it in office - but then again, hell if I had the chance to eff my wife in the oval office I probably would.
His relationships are his business and his alone IMHO. What he does sexually and with who is none of our business and IN NO WAY has anything to do with his ability to lead or the decisions he made for the country.