First, i dont know why bethesda put this on game.I dont thing that its a important thing.Where can i use hand to hand?Is there a quest or something?

You punch people with it. Which is useful if you get disarmed. Thats all there is to it.

Some people have finished the game with hand to hand as primary attack. For me it has two uses, preserve charges on the enchanted sword while killing weak enemies and at the same time getting multipliers for strength.

Its a skill used in combat, just like blade and blunt....

It fatigues enemies and eventually drops them to the ground. and it barely fatigues you, so you can continue to do maximum damage for longer. Albeit not very much.

Also, it's great for roleplaying characters that avoid combat, and rely on only thier hands for defense. Like Monk, Scholar, and Mage types.

I suppose it's used for Roleplaying and amongst people that like a little challenge when gaming.
Personally i've never really used it, I'd far rather the company of a weapon to aid my combat - but I can see the appeal; especially for martial arts fans.
^_^

(Also, what would happen to those poor trainers outside the arena. All they do is punch each other ).

I've had a character who relied solely on hand-to-hand for combat. Let's just say he didn't last very long...

It was boring, but I can see the roleplay aspect of things weighing in the scale enough for people to use hand-to-hand. Anyway, people are complaining about lack of kicking in the TES games. Imagine how much they'd complain if you couldn't even punch people. And it's handy if your weapons get disintigrated and you have no talent in offensive spells.

H2H should atleast have some kind of unarmed weapons, such as in fallout. This would balance the H2H compared to blade, blunt, marksman, magic.

I've tried h2h as a primary a few times and I can never get into it, even from an RPing perspective. It's just kind of boring to sit there beating on some dude for minutes at a time. Like other have said, I think it's mostly useful for warriors who's weapons have been broken and have no other way to fight. It thins case it can be extremely useul. It doesn't have much use to a mage though.

not being useful to mages? not so. what happens when you're playing an atronach mage, and run out of magic potions, welkynd stones, magick, and possibly stave charges? you switch to H2H. very useful once lvled

How else would you role play a Khajiit Goutfang Master? Or a pugilistic Orc drunkard? Or a Monk of any type? Although I'll agree that Hand To Hand is weaker against higher level enemies.

I have started a monk (custom class Free Monk) that uses hand to hand and I think it's useful when you don't want to carry a lot of weight around. I'm walking around in the same sack cloth pants, shirt, and sandals that I came out of prison with (including the wrist irons).

In one of the forts, don't remember which one, I was able to sneak attack and kill 4 Bandits and a Mage with just my fists.

Have fought two roadside bandits and beat them too. Although, it was quite a fight with one of them.

Your bare fists never degrade, wear down, or break. As your skill increases, your weapon (fists) automatically upgrades without buying anything

True that you need to get up close and personal but I have added Conjuration to my class so I have a trusted companion in my conjured skeleton.

I love the idea of being able to walk around free of all of that armor and still have a powerful weapon.

This.

People who love little quirks and benefits. I'm sure Lutherius would be outraged if his monk could never become more proficient at slapping daedra and bandits around. And what he said is very true, you never have to buy weapons or worry about pesky enchantments (which i love ), or repairing your fists....

The best adavtange i see though, is the fact that you don't fatigue at all at higher levels and your enemies take a beating that will surely test thier conditioning, fatigue plays a big factor for me.

I also, however, have never used H2h as a major on any of my characters nor would i ever.... I think a far more appropriate skill would have been polearms and/or axes. IMHO

There are several items in the game that fortify hand to hand, and you can also create spells and enchantments that boost it (you need to know some "Fortify Skill" spell.) This is actually a pretty good "backup weapon" for a pure mage, since mages are not likely to be working on advancing Armorer, given that they rarely use weapons or armor.

No way to use poisons, though.