Yes, most cyclist's ride clinchers these days. Clinchers have gotten much better over the years and they ride really well, save you money, are a lot less messy to mount and repair and are most rider's choice for training and even for racing.
There are definitely die hard tubular fans and tubulars are lighter and corner really nicely but you don't see nearly as many people riding sew-ups as you would have in the early to mid '90s. Cyclocross is an exception where sew-ups rule for their resistance to pinch flats and the ability to ride them at really low pressures.
Get yourself a nice clincher wheel set for training and general racing and then upgrade your race day wheels if you get totally hooked again.