Is there a point to jailbreaking anymore? Any good hacks/ skins available?

With the Evasi0n jailbreak supposedly coming out tomorrow at noon, I was wondering if there were any merits to jailbreaking my already unlocked iPhone 4S. So, in that light, what was your reason for jailbreaking in the past? Does it exist anymore?

Also, does anyone know of any good skins that would make your iPhone look like it runs android 4.0+?