I'm at the point that I don't even try new Google products because I don't trust that they will stay around. I got burned too many times: Wave, Knol, Google Health, Buzz, Notebook, Answers, and most importantly Google Reader.
There is just no way I'm investing time in any new Google product. They are untrustworthy.
For instance, why on earth would I want to use Allo when still Hangouts exists? We know one or both will get cancelled within a year or two. I'm not going to sick my neck out and try to get my friends and family to use one of those platforms only for them to go away.