I just consider poking to be the "faster" and easier way to score frags. The only disadvantages in duels you may have are, that you need more then 1 swing to kill your opponent and that you need to be more careful since every mistake you make is pretty much going to result in death.
My only issue with pokers nowadays is that im pretty much unable to play with them on the same team in TFFAs. I always get the least score and therefore usually get considered as worse or less skilled then the rest just because im unable to kill my opponents with one hit. It works fine when im on a team of non-pokers like the JAA though. Still, the non-poker will always have to hit his opponents nearly twice as much as a poker who doesnt really have to aim neither.

Frustration shouldnt be much of a problem if you have the right mindset neither. Thats pretty much where most people fail though. As ive said, its a bit more challenging to play without poking, to rely a lot more on timing and precision, and to do less damage then a poker does. Less damage for more effort. If you turn it around, "More damage for less effort". Thats pretty much the main reason why most non-pokers get frustrated and therefore dislike "exploiters". The poker can kill you way faster with less effort. So it takes a lot more effort to be successful as a non-poker and a lot more practice to get the right timing and necessary precision, which is bound to a lot more failure. Most people really dislike the fact that their hard work and hours of training are usually not enough to keep up with a high sens though.

EWW!

DIE!!!