I have one that I need to replace. It’s a non-bedroom closet. Are mirrored ones considered tacky or dated?
False dichotomy. Tacky and dated. 
It depends a bit though. Those sliding mirror doors people did in the 80s are tacky and dated. If you do a mirror inset into a single panel door, not so much. Even better, have it on the inside so you use it when you need it, and then it’s shut away when not. If your room feels small, keep it on the outside and you’ll make it feel bigger.
They’ve never been my cup of tea, but go by what you like. If a mirrored door opens up the room, or brightens a space and you find it attractive, then go for it.
Whatever you do, don’t decide by what some over-priveleged c*** says on a house-hunting TV show.
Fine and useful in a bedroom, elsewhere kind of unusual.
Its good way to see if someone in your house is a vampire or not, put the garlic away!
The “is it tacky/dated” would matter more if you were renovating with intent to sell soon, and matter less if you like the idea and you’re staying for the foreseeable.
The question is, do you like them?
I don’t, but I suspect there may be some vampire in my ancestry. My decorative mirrors are small and the decorative part is the frame.
Yeah that was my primary concern. The “when” is up in the air in this economy 
Thanks for the input, all. I think I will go for non-mirrored, bifold if they make ones that fit in the given space, another sliding if not.
Mirrored doors make the room look larger.
I swear I just wear tinfoil underwear for the fashion, no other reason.
Nay
I have them in my teeny tiny bedroom. Not my favorite but as others have mentioned, it creates the illusion of space. Mirrors on the ceiling are another story.
We have mirrored closet doors in the bathroom. Watching yourself sit on the toilet all the time is like having your very own Total Perspective Vortex.
I just (finally) got rid of the last of the mirrored sliding doors from our 1975 rancher. I didn’t so much hate the mirrors as much as I hated that, fully open, you had only 18" of access to the closet. I due to the space constraints, we need bifold doors in the 2 bedrooms, but the hall closet has a full 36" door, and it’s wonderful!! No more rasslin’ to get the vacuum cleaner out!
And thanks to Craigslist, a nice man came and took them all away. Yay!
Yep. First thing that was tossed when my wife and I moved into our house. Couldn’t give the old doors away either, they ended up at a landfill.
I can beat that.
In my bathroom, the bathtub is opposite the toilet. 3 walls around the tub have 4’ tall mirrors covering the entire walls. Since they exactly fit the alcove, they must have been custom sized. So sitting on the toilet, you get a 3 way mirror view of yourself. Right next to the tub alcove? A closet with mirrored doors. Over the sink cabinet? A 3’x4’ mirror in an intricate frame, spray painted silver.
But - to the OP. I actually don’t always mind mirrored doors in bedrooms. I’m not convinced the room looks bigger, but it sure can brighten a room, without needing to use lights.
I remodeled my daughter’s room and it’s kind of small. Doors on her closet opening would have limited the space even more. So I put sliding mirror doors on the closet to save space and to make the room look larger.
They are tacky and dated. All I can picture are sliding mirror doors with the tacky gold-bronze edging. Shudders in 90s horror
With the bifolds, don’t get the ones with the faux shutters, either. Those are so 90s, too, especially the ones that were only shutters on the top. Solid doors. Classic, clean.