Do you reckon this'd be much cop? The wife and I are thinking of doing this within the next 100 years. I see the following goods and bads:

+
You're your own boss
Could potentially make big bucks
Chance to be creative and see £££ as a direct result
I like the service industry

-
Dependent (to a certain extent) on things outwith your control i.e. weather, local planning, general industry trends etc.
Could get nutjobs staying
Not much free time
Fair amount of capital required to start with

Anything else to add to either list?