Growing up has got nothing to do with it.
I've always backed up my phone, transferred music and managed podcasts through iTunes. So yes I do have to use iTunes. Because I want to.
Win 95 is an irrelevant argument at so many levels, your talking about a product that existed nearly 10 years ago. iTunes 11 has only been around for 6 moths to a year? You think it's reasonable to write off updates to a device after 6 months?
Eh? Updates to what "device"? We're talking about a piece of software which isn't mandatory but which you choose to use, and which requires an update in order to be compatible with iOS 7. Sounds perfectly reasonable to me.
The Win 95 analogy, whilst extreme, is totally relevant. Just as you wouldn't expect any modern software to still support that operating system, why should we expect iOS 7 to work with an older version of iTunes that was released long before iOS 7 existed?