> Every time I try to use Safari to create something that goes beyond "display text" it's a new adventure in bugs and unsupported features that work in the other browsers.

Do you have any examples which aren't so vague? The only times I've encountered this problem with other developers has been when they were using lots of Chrome-only features and put off testing in other browsers; when starting development in Firefox or Safari the most common case since around the early 2000s has been that everything works in the other two browsers with minimal effort.