Slumpy
Life they say is what you make it, I would say its how you see it. Lets have a run through, no rent to pay, no stock to buy, no vat, no staff, millions of potential customers, work how/when you want to suit you. Free as a bird.
You have never had it so good, but you want a business. Well go out and rent a shop, buy some stock, employ some staff, register for Vat and then sit and wait to see IF enough customers walk through your door to pay for it all. Then see what you think of window cleaning then.