Is it worth it?
If you want a 65-inch OLED that can pull double duty for movies and gaming, the Samsung S90F 65-inch is aimed squarely at that buyer. The appeal is the mix of OLED contrast, 4K AI upscaling, and a 144Hz panel, which gives it a real edge for dark-room viewing, fast sports, and console or PC play. The trade-off is that this is still a premium TV, so the value case depends on whether you actually use the high-refresh, HDR, and smart-TV extras rather than just wanting a big screen.
Buy this if your room rewards deep blacks, vivid color, and smooth motion, and if you want a TV that can handle streaming, sports, and gaming without feeling basic. Skip it if you mainly watch in a very bright room or want the cheapest path to a large screen, because the S90F is built for picture quality and responsiveness first, not bare-bones savings.