First, yes it is a bit like lawn bowls on ice. It is a Scottish sport, much played in my homeland, Canada.
I used to curl regularly when I lived in Canada. Unlike bowls, a certain amount of physical strength is required. The stones are heavy, and sweeping the ice vigourously whilst propelling oneself in a sliding motion along the ice takes quite a lot of energy. The introduction of brushes to replace corn brooms has made this task somewhat easier.
There is a lot of skill and strategy involved. Knowing when to play a draw instead of a takeout, where to place a guard, whether to call for an inturn or outturn, when to sweep etc is all part of the skip's armoury. Once the decision has been made, the curler then has to execute and that is where the skill comes in.
I could go on and on, but you will have gathered that I do not find curling a boring sport.