Some people may care about the math issues (not a problem I've hit personally), but I would wager many many more people care how it looks. Especially the millions of users who download it because their friend told them to, open it, get a negative first impression, barely use it, and then pay Microsoft.

Do you even listen to yourself? "It doesn't matter that the product doesn't actually work, what's really turning off users is that it isn't pretty enough!". No wonder so much open source software sucks.

> "It doesn't matter that the product doesn't actually work, what's really turning off users is that it isn't pretty enough!"

This is unfortunately a very real phenomenon. You're telling me you've never worked with/for a company that went gung-ho on some half-baked pile of junk of a system because some sales guy wowed the execs with some flashy "whitepapers" and pretty demos? If not, then you're luckier than I've been, that's for sure.

Sure, and when it is deployed and everyone hates it they keep using it because no on wants to admit they built a pile of junk based on pretty pictures.

But that's not how it works with open source, because I can simply choose not to use your garbage. Do you see the difference?