I have very similar views to some of the points made on here. I also have never had an auto till now, I love the feel of a manual and the feeling of how you're in control of the car. However, given my daily drive is 80% in traffic, the DSG is just brilliant - no worrying about 1st, 2nd, 3rd, 2nd, 3rd, 1st etc etc - car does all the work for you.
Do I therefore miss a manual when I get to nail it and have some fun? Yes and no. If the car is in full auto mode in S, it sometimes pics the wrong gear if you want to do something unusual like hammer it suddenly. But I've started driving in manual mode now ie. pushing the stick to the left and using the paddles. This nulifies my want for a manual, as it is effectively the same (not quite but nearly!!)
I also find that reading up on how to drive a DSG is really useful. There's an article/thread knocking about somewhere. It explains the double clutch and how the DSG thinks, so for eg. when I first got the R I would drive it like I was driving a manual - if I wanted to go from 6th to 4th I'd flick twice on the paddle quickly - this confuses the DSG and I wasn't getting the desired effect. The article explained that if you flicked down to 5th, let the car realise you want to have a bit of poke, then flick down to 4th after a small wait, it then has the right preselected gear ready for you when you do change. I'm not explaining it very well lol, but it works, and makes a world of difference!
My final thought is in general to autos v manuals - I've always found in all the cars I've driven that anything sub 5 seconds 0-60 should be an auto. If you're having a race, or if you want to nail it properly, a human brain just isn't as good as a computer - certainly I'm not that quick at gear changing compared to an auto box! There's always that delay as you move the stick. And I just feel an auto is better for a quick car, you get the most out of car for those kind of cars.
I do still miss a manual when on the open road sometimes, but the DSG is just that good that its only briefly. I'd highly recommend it if you're getting an R. But as others have said, its all about test driving it and how you feel - but I'd try and get a car for more than an hour as it does take a while to learn how to get the best out of a DSG. Also, after driving a manual for over 20 years, I've enjoyed the challenge of learning to drive a different way
