furnishing certain points why i prefer affiliate niche sites than google adsense based sites.
1. There is no risk of getting banned, unlike in Google Adsense.
2. You can have multiple account with Clickbank and other affiliate networks.
3. No worries of invalid clicks.
4. No need of updating the site more often.
5. You can change the product to other more converting one.
You Can easily flip the site. (You will make more money by flipping if the site is making money with Google Adsense).