Hello Willowplanter,
I agree with you that they are cute, but it is true that some gardeners consider them a pest. It probably depends on how much you want your garden to be a sanctuary for wildlife, and whether you are growing a crop for sale! Have a look at this page from the BBC website to learn about their habits:
http://www.bbc.co.uk/nature/wildfacts/factfiles/264.shtml
Emma
gardenersworld.com team