I bought a used projector some time ago. Couldn't be happier. I usually watch something after it's dark and I also have very good blinds. It probably warms up in similar, or better, time that many TVs boot up nowadays. I just have a Chromecast connected to a soundbar connected to the projector. VLC handles Chromecast, although somewhat buggy, so I can watch things from my computer in another room.

Also Netflix experience with Chromecast is mostly superior to smart TVs, because it will not play anything while you just try to find something worth watching.

Connecting Chromecast to the soundbar also gives ability to listen to music from Youtube, without running display. It wastes bandwith however.

EDIT: I wrote "beamer" instead of "projector" at first