Going CommandoThere are plenty of valid reasons for not to wear underwear.
First what is the purpose for underwear? well most people from seeing old TV shows or cartoons and slapstick would guess that underwear serves to be the final defense against full frontal nudity.
but the real reason for underwear is hygiene mainly, it allows you to wear your slacks or shorts for longer while your underwear which has been in contact with your sweaty nether regions gets washed, and being smaller takes less to get clean, you can also have many pairs of them.
But there are plenty of reasons not to wear underwear.
If you have good personal hygiene it won't bother you that much, if you live in a place that makes people tend to sweat profusely underwear can do the exact opposite of hygiene, it acts as a sponge for soaking up sweat which does not get to dry out as it's covered by another la
Crotch itch and fungal infections can result from this, it is not fun at all, find underwear that is pure cotton or some other highly breathable fiber but if all you have acess to is those synthetic nylon stretchy ones that just act like a sponge for sweat, do not wear underwear if you can.
Make sure you wear a belt however and cinch it tight enough so your pants have no chance of slipping and exposing yourself, that is not good, just like with Women who wear skirts without underwear, very risky mini skirts are out of the question.
Underwear is ba
So with that in mind, it is not foolish to consider the underwear as a redundant clothing item, plenty of clothes are comfortable enough to wear without the need for underwear anyhow, and are pretty loose fitting, but for decency's sake wear underwear if you go to the changing rooms, that's the only time i ever really wear them.
When i do wear underwear myself, it's usually one of those close fitting cloths which is wrapped around to create a pair of briefs, seeing as how alot of underwear save fancy pants expensive ones are from China or India or who knows where, they may be made with improper materials which are actually very bad.
pure cotton or nothing.