How is it that I'm a Master mage in Destruction yet i get interrupted by hits during the ridiculous spell casting time?
I understand that epic spells need time to cast but why should some little mob be able to interrupt a Master mage with hits?!
Do hits break my concentration when casting spells?
If so shouldn't it be hard if not impossible to interrupt a Master mage?!
Don't mages train concentration from the get-go to be able to cast anything at all and shouldn't that concentration be perfected by the time you reach Master level?
Not to mention that you lose all the magicka spent during that casting time?
And why is the casting time so great?
How do you expect a Mage with puny armor to cast for 5 days and get interrupted 50 times and lose all magicka to be able to kill anything with these oh noes Master level Destruction spells?
Can you give an example of any Master of anything that gets interrupted by problems that he should have solved in the start of his training?!
What if your rocket scientists get interrupted by a fly while they work and lose all they worked for?
How does this make any sense?!?!
And how am i supposed to Enjoy my Master mage if anything can interrupt my epic spells with two hits?!

Please notice how often i used the word Master because the Master mage in Skyrim doesn't feel like a Master at all...

TLDR : Master Destruction spells are totally useless and badly made.