The stormcloaks don't think about the future. They're just "hurdurr skyrim belongs to nords, hur durr we racist".

The imperials are smart and think about the future. They are willing to set aside one god to prosper in the future. Plus they're not recist. Very important.

Can you explain to me what would happen if our alliance with the thalmor was broken?

Never looked into the lore too much

Well you have to keep in mind that what we see as religion, in the Elder Scrolls universe, is actuality. The gods actually do exist and it's not just faith, and that the worshipping of the gods is what helps make them stronger. Considering Talos was risen to Aedra status, and supports the side of the Imperials, banishing him, would greatly reduce his influence on nirn, and thus weaken the imperials against the Thalmor when they decide to attack. For this reason I chose to side with the Stormcloaks.

I never truly realised that, the gods getting stronger through worshipping. Thats very interesting. But still, I side with the imperials. I feel I can just relate to them more.

i couldn't find a good picture of the actual wolf armor, i believe this is a retextured version.

Choosing allegiance in Skyrim is hard, the High Elves are just as bad as Ulfric, except there's more of them, and they have more power

Imperials are puppets of the Thalmor ad the emperor is dead (If you kill him).
Ulfric is under Thalmor control whether or not he knows it, and the stormcloaks are racist dicks.
Thalmor are bigger, more racist dicks than the stormcloaks.

Kill them, Johnny. Kill them all.

There should just be an option to claim the throne and become the Dovahking.

We need a Yes Man.

Either way, the Thalmor lose because they are actually benefiting from the war. The problem, though, is that the empire has already lost to the Thalmor, meaning they are more likely to lose again. However, if Ulfric wins over Skyrim, and with Hammerfell rebelling too, they might have a chance against the Dominion.

The dovahkiin, and possibly a small dragon army, might help as well.

The Dovahkiin and the "armies" he commands (3 dragons, dawnguard/vampire lords, dark brotherhood, compaions, College of Winterhold, etc.) could wipe out the Thalmor in a week.
From a non-dovahkiin standpoint, The Stormcloaks could not hope to defeat the thalmor in skyrim alone. Hammerfell is busy with the dominion already. If the empire began to be reunified, they could Aid Morrowind in its recovery, then retake the southern provinces and send relief to hammerfell.
With Hammerfell, Cyrodill, Eleswyr, Black Marsh, Skyrim, and Morrowind, Retaking Vvardenfell (and possibly Orsinium?) wouldn't be too difficult. With that, Summerset Isle would be the only place left that the dominion could hide. The Empire could then launch a massive invasion with armies from every province, and crush the dominion. THEN and only THEN should people worry about petty squabbles like Skyrim's Civil War. The best way for this to happen would be for the Stormcloaks and the Empire to come to a TEMPORARY truce, and then they could resolve the problems after the second Great War ended.
If the Dovahkiin expended all his efforts into aiding this, it would go by much faster, and, while the Greybeards would not approve of such direct use of his power, it would create a chance for peace to occur over a longer period of time.

I think the thalmor actually befit from the stormcloaks winning, as it divides the power of the empire, giving them an advantage if when war breaks out. That's why they sent in their judiciaries and outlawed talos, to piss off the local population.

Both parties are against the Thalmor, only the imperials handle the problem better. If you chose the imperials, the high elves won't bother you. If you chose the stormcloaks, you will have the thalmor and imperials chasing your ass.