This is how a disruptive technology starts. Google Apps doesn't have to be better, but the idea is that one day, you'll find Google Apps "good enough", with all the benefits of being online (and now offline, too). You're just on the higher end of the power-user curve, but your "good enough" day is approaching.
I'm not sure why we give so much credence to legacy users complaining about new software (tech in general). Specific use cases are either adaptable or they'll work their way into the new whatever as demand grows. For example, I never dreamed of using my iPad w/ usb keyboard as a laptop replacement. It's not perfect, but it's rapidly becoming my preferable method of computing when I'm not at home.
I agree completely. Google apps have already come a long way. Even right out of the box, I liked the spreadsheet functionality. Excel is great for complex projects but for simple data storage, I find docs to be easier to use.
I believe they were the first to auto sum columns in the bottom right hand corner, a feature which excel later added (feel free to correct me if i'm wrong). Something simple like this can be great for quick projects. I also like the ability to share within a group and allow multiple people to edit it. Imagine how much longer it takes to pass an excel sheet to 10 people and have them edit things.. I like the new update to edit without making instant changes that others will see.
More to your point, I would say that the spreadsheet app is definitely "good enough" for basic use but the word copy in docs needs some work. I like the share-ability feature, but I think word is better in almost every way.
Exactly how I see it, Google sheets is adequate for my useage and if I need more then I can download a .xlsx or .csv and do more but so far, for my use case, that's unnecessary.