* have switched from Chrome because <...> reasons why Chrome is worse or has become worse
* have always used Firefox and never left it
* have used Firefox but have faced issues and would want to try it if <...>
What I, as a long time Firefox user and evangelist, would like to know is how we can have Firefox thrive and grow, what Mozilla Corporation is doing (or not doing) to get more funding for Firefox, and why we aren't seeing all those services that they wanted to sell to generate revenue. The Firefox team has reduced in size recently, and more money might probably help avoid such situations (or postpone them).
P.S.: Donations on mozilla.org go to Mozilla Foundation, which is the non-profit parent of Mozilla Corporation (the maker of Firefox). I do not know of any direct way for end users/supporters to fund Firefox development.