Should I get my wife a can opener for Valentine’s Day?

I would choose another gift, very often can openers become dull or they break in a short space of time. They are not lasting. 

Yes, if she's asked you for one.

just go for it...

No why would you only buy her that she deserves more 

It's a practical gift. Nothing wrong with that. I would appreciate it if it was me. 

its the thought that counts.can opener wrapped and a card..The fact that the thought counts more than the price tag is important for people to realize, especially in these challenging economic times when people are really strapped for cash.”

Sure, if you want to.  You ca get flowers, candy, diamonds. or...

a can opener.  How romantic.

Yes, but make sure it's a good one. Most of the ones made today just break in two weeks. If you have a Publix nearby they have good ones.

Yes, she'll be delighted and don't forget the can of beans to go with it.

If your goal is to ruin the day for her then sure, go ahead stupid!