From Bitonic.nl, a well-known website in the Dutch crypto-community.
Bittrex nowadays. Used to be Cryptsy and BTC-e a while back. Then switched entirely to BTC-e, and eventually moved my activities to Bittrex.
I do. I'd rather see an increase in value relative to Bitcoin than a higher value in $$$. However, in an ideal scenario, both values go up.
No, I withdraw via Bitonic.nl. I send them Bitcoins and they pay out the corresponding value in fiat on my bank account. In my case, Bitonic is both an entry and exit point in my trades.
And yes, the fees are pretty severe nowadays. Bittrex deducts 0,001 BTC per transaction, that's $4,4 nowadays ... !