Why did mods and rockers ride mopeds?

Mods and Rockers were two disparate youth sub-cultures during the 60s and 70s. Mods rode classic italian scooters (Vespas and Lambrettas), wore tailor-made suits and parka jackets, they were the into contemporary british music of the time such as bands like The Who and The Specials.

Rockers rode bigger motorcycles and wore leathers, listened to Elvis and other rock and roll and were generally dirty bastards.

So in answer to your question, only mods rode 'mopeds' (although they were actually scooters, slight difference)...and why? It was part of their culture and a cheap and stylish ride to go with their lifestyle.