They're designed so you can still operate touchscreens in you car or on your phone without taking them off. They're a little steep for gloves ($100-150) but most of us have spent over twice that on a pair of shoes or a coat. It's an extremely functional item and think the convenience far outweighs the cost.
Ive got touch screen gloves too - but they were about $10. Made by Head, not especially thick but enough for most weather. If it's colder than that I wear ski gloves - a wind and waterproof shell with a fleece lining. Don't wear them often though.