get a better saddle and you won't need a padded diaper
that "padding" is a chamois for moisture management and to reduce chaffing, not padding for your sensitive tushie
if you need cycling shorts, try the Performance Ultra brand of shorts or bibs.
wash when needed...I have never felt the need to wash them at work. Take a shower before you leave in the morning, then let your shorts dry thoroughly during the course of the day, then wash and hang dry that evening at home, and you'll be fine.
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"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey