I'm reluctant to use new Google services because I'm afraid they will be abandoned (Buzz, Wave, Reader) or pivot into a new direction different than what I orig

I'm reluctant to use new Google services because I'm afraid they will be abandoned (Buzz, Wave, Reader) or pivot into a new direction different than what I originally signed on for (Picasa). But I think social networks have a life cycle. I still use Twitter, though it's changed a lot. I still use Instagram and Facebook, but new users just coming online in their teens or earlier, will likely choose something else. Existing social networks could support these new groups, but they want a new identity. That said G+ was trash from the start. Shoving it down our throats didn't help.