So i tanked for the very first time today and i've made up my mind.

[Seraphor]

Seems to me that people who get put off Tanking are those who put far too much pressure on themselves.
Tanking might seem daunting at first, because there's a degree of responsibility there, but it's really one of the easier roles to play.

Tanks don't really have any rotation, their skillsets are simple and mostly straightforward, at least up until 60+, and they have an 'easy mode' called 'Tank Stance' where as long as you're using your emnity combo and AoE pull skill, you really can't go wrong at all.
It's ok to do just that when you're learning the role, and forget all about your DPS output. What's the worst that could happen? Some neckbeard gets a little irate that he finished the dungeon in 13 minutes instead of 10. Just be polite and tell them you're new to tanking.
The onus is far more on the Healer, providing you have adequate gear.

As someone who dabbles in all three roles at end game, I have to say that DPS and Healers have a far tougher job of it. Healers have to be much quicker to keep everyone alive, and DPS are under more pressure to perform well to achieve their numbers.
Before endgame? There's more slack on Healers and DPS sure, but the Tanks aren't exactly more difficult to play, there's less cause to use your big ticket migitators for one thing as deadly tank busters aren't really a thing.

There's only a few rules you have to follow:
Be the first to attack an enemy.
Face enemies away from the party (unless they have a rear attack)
Don't move the boss too much unless absolutely necessary.