This has been my reason for continuing with IExplorer. I've tried Opera, Firefox and a third one (can't remember which) but the fact is, they're not compatible with The Internet. How infuriating.
Yes, web-design types remind me that this is because bad web-designers don't conform to the documented standards properly. But, if IExplorer is compatible with ~100% of the WWW and Firecox only works with ~90%, then I know which is the de facto standard.
I live in rural Bedfordshire. Many of my neighbours drive off-roaders and can go anywhere. I drive a small sports car because it's faster and it does the things I want, but I have to stick to the better roads so I don't get stuck. The rutted old tracks are there for me to use, but I accept that my choice of car carries advantages and disadvantages. I don't whinge that the council should come and tarmac every rutted track in the area simply because my car can't drive on them. If I wanted to have a car "compatible" with all the roads, I'd buy the larger, slower and less efficient off-roader.