Can you elaborate in what the potential downside might be ?
all your data are belong to us ;-)
Society, the greater good? What upsides are there for you to keep your house in good order? Why not let it deteriorate and make your street ugly?
Would you feel the same if streetview was a government project? Sure, google is a company, probably they'll get something out of it. But then again, they created this really cool utility and document for people - and you spoiled it.
Yes
Bah! Humbug!