The first dragon fight was easy, but it was supposed to be. You can potentially get there in 20 minutes, and they don't want to leave new players unable to progress beyond the first 20 minutes due to them not being able to beat an OMGHARDCORE boss, so they made it easy. The next few dragons are also rather easy. However, get to a blood dragon that refuses to land for any reason whatsoever, and will constantly strafe run you, and you have a fight on your hands. At least if you are a warrior.
And of course there was no kill animation, you're using magic. I don't know a ton of games that will pull you out of your control to make some big deal out of doing something you've been doing for ages; blasting a spell at them. Warriors get a finishing move sometimes, where they jump on the dragon's head and slash at it and kill it, but I haven't seen that many magic finishing moves outside of games that purely focus on magic. You want a finishing move, zoom out, step into its fire breath and cast your spell forward. That is a battle of wills; who will run out of health first?
Also, why would you expect a massive quest to attack a dragon that's attacking the city. It makes far more sense to run to the burning tower to investigate, and then it attacks you too. If a dragon were attacking a city, I doubt I'd go to a nearby mountain or ruins to fight it. no, I'd go to the city.
Balance is very broken in Skyrim, a pure anything is massively overpowered, whilst spellswords and the likes have some challenge for a bit of it.
Now, when you get to the point that three ancient dragons that refuse to land are attacking you, and you find that easy, then you can complain that the game as a whole is too easy. When you're only fighting basic dragons, however, its for the people who don't like dying every five minutes and is balanced to be an easy kill.
Paladin Anderson said:
I eagerly await the inevitable mod that will make dragons something you want to run from rather than towards.
More HP. Wholly mammoth level of HP.
Lands less, more aerial breath attacks.
Breath does more damage.
Not sure what else. Maybe summons monsters to harass you?
Also the difficulty of the game has a LOT to do with what tree you are focusing on. Want to be so over powered that you fall asleep on your keyboard? Focus on conjuration magic and bows.
Sounds like you want one of those ancient dragons that refuses to land. They do happen. Some dragons will land too easily, some (Like my third dragon when I was a pure warrior with as sword and shield only) refuse to land until they are almost dead. Ancient Dragons have a lot of HP, do some reasonable damage with their breath attack (Though, depending on what perks and how you've specialised yourself it may still be negligible by that point), and dependant on where they are may refuse to land. Oh, and did I mention sometimes you fight 3 of them at once?
The early parts of the game area meant to be easy. Late game can become impossible, difficult, easy, or ROFLSTOMP dependant on how you spec yourself, but that is what happens when you have a million different combinations that a player might have by that point.