Sometimes I care where stuff is made. It depends on the item, and the quality of that type of item or it's components depending on where it's made.
For canister filters I have not noticed a big difference between domestic and import. I think the plastic molding on Renas may be better, but as long as you don't abuse your filter it should be fine either way. And seals can go out anything, you can always replace seals with better ones either way.
With other things, such as pumps I certainly have. But there's a point where you have to compare cheaper cost for imports, vs how long they last. Sometimes the imports still come out cheaper even if you need to replace periodically, and sometimes you'll spend more in the long run on replacements.
There's also an ecological responsibility and ethics factor. If you want to save on landfill waste and carbon emissions, then you're better off going with something that is going to last for a long time, rather than have to be disposed of and replaced on a regular basis. I'm not trying to suggest people do one thing or the other, but depending on your values it's something to think about.