I originally started with 'bents because my wife has neck and spine issues and couldn't do an up wrong any more. So we found a couple of Burleys in '08 and absolutely loved them. Then we discovered the tadpole trikes, and as we've aged, she's also lost some of her ability to balance, so they're perfect for her. The trikes are just plain fun for me. I built a diamond-frame tourer in '10 to ride RAGBRAI. It was tricked out exactly how I wanted it with exactly what I wanted, including butterfly touring bars. I found that I couldn't ride more than about 50 minutes without my neck, back and shoulders going into spasm, and my hands going numb. No amount of parts swapping or geometry re-arranging helped... which was the beginning of the end of diamond-frames for me. The last NWT I had I loved because I rode it for 10 minute grocery-getting and errand kind of rides... but the Grasshopper fx has even taken over those duties now. I had H bars on the NWT.
And I ride in street clothes, but I do use clipless shoes and pedals with Crank Bros Eggbeaters.