the most desired classes for “endgame” dungeons are Warrior, Guardian, Elementalist and Mesmer, Thieves and Engineers are situational and most pugs avoid them while Rangers and Necromancers are very undesirable.
And I am become kitten, the destroyer of kittens
Like penguin said engineer sounds the most interesting to you so far. Aside from feeling underpowered, it’s still very early on in the game at a low level. But as you unlock more stuff such as kits, turrets, other utilities like rocket boots and slick shoes you’ll have more fun with it I can guarantee. I thought the same way when I used elementalist as I was leveling up, but after having all my professions at level 80, elementalist is so much fun to play for me. So just keep pushing forward and see if you enjoy it more. It isn’t a race to get to max level anyway ^^
[IRON] [ASR] | Maguuma
#ELEtism
My advice is to make a character of every profession and go PvP with them. That way you can try out all their skills and traits to get a feel of the gameplay.
From your description I would have suggested Guardian as it is easy to solo with but also valued in every aspect of the game. Though i do appreciate that it may not be the most conceptually original design. Don’t think of the guardian as the paladin-type though, there are some really great utilities at your disposal as a class and I wonder if you were able to appreciate them all if you stopped at 25. Anet is also planning to expand the use of all weapons to all classes (though who knows when). This means that the Guardian will have lots of different gameplay options open to the class – on top of the versatility that it has at the moment. It is also the most stable class in the game, whereas the Warrior, for example, often fluctuates between being OPed and getting nerfed. There is also a spirit weapons buff coming up (supposedly) in a patch soon. This is a similar gameplay mechanic to engineers and may be fun to play around with (though probably still not viable just yet).
But remember – all professions can do everything equally once you hit 80 (supposedly). So just play what you enjoy the most
Desolation EU
Guardian / WvW Enthusiast
the most desired classes for “endgame” dungeons are Warrior, Guardian, Elementalist and Mesmer, Thieves and Engineers are situational and most pugs avoid them while Rangers and Necromancers are very undesirable.
There are so many things wrong with this post.
First of all, there is no endgame, since your level changes to match the level of the content you play, so if you’ve never been to Charr starting areas with your lv80 Sylvari, you can go there and enjoy it with matched level.
Then, dungeons is not endgame. The gear you can get from them is endgame (if we don’t count ascended tier), but the same gear can be acquired from either Orr temples or the trading post.
Where your personal skills and acquired gear really matter, is a magical place of WvW. That is endgame – not for me, but objectively for everyone.
The reason why I put it into quotations is because I don’t actually believe it to be “endgame” and as you said, you can play those dungeons at any level, the only thing that matters is your skill, the reason being I wanted to answer OP’s question, and as a general rule (and thus most consistent estimator) those are the most desired classes and those others are the least desired classes.
And I am become kitten, the destroyer of kittens
Mesmer started off slow for me – takes a long time for their builds to gel, but once you get to 30 or so they become very pleasant to play and continue to pay off for a long time. Just expect the 10-24 level range to be strangely awful 
.
(I have 3 now 
)
“You keep saying ‘its unfair.’
I wonder what your basis for comparison is…”
- Jareth, King of Goblins.
