Everyone felt the same way from the very beginning. Especially when MS took away the Start Menu when they first released 8. If you've used Win 8 before and got yourself familiar navigating around it, switching to 10 will be a more pleasant experience. And switching from 7 to 10 won't also be a total shock for new adopters as MS tried to keep the same familiar desktop environment but with extremely enhanced user interface.
I agree 7 is one of the best OS there is and that's why I am keeping it. But we also have to catch up with the latest OS development if we don't want to be left behind.