I'm pretty much a physical-only person (and, except for Halo, I'm a single-player- or local play-only person). The last new-release digital games I spent money on were Perfect Dark HD and Mega Man 10 back in 2010. Since then, aside from a couple of Virtual Console titles, the only games I downloaded are ones I got for free as part of some promotion.
I like physical because I like owning things. Physical copies are legally your property to do with as you wish (except for making and distributing new copies, obviously) as they are protected by the first-sale doctrine. You can lend, sell, gift, or trade the copy at your own discretion. The first-sale doctrine makes the used games market possible. Since second-hand copies usually remain on the used market indefinitely, you can, in principle, find and buy a copy of an out-of-print title, even if you had a copy and lost it or never owned a copy in the first place. There's plenty of games that have been long out-of-print and never been re-released for whatever reason, yet are still available for purchase decades later. And if you take good care of your physical copies, they'll last you a lifetime.
I don't like digital because you don't own the copy. The copyright holder does. They're merely leasing it to you indefinitely. Under U.S. copyright law, the first-sale doctrine does not apply to digital copies, thus you cannot lend, sell, gift, or trade the copy unless the copyright holder gives you permission to do so. They can even rescind your license to use "your" copy (quotes intentional) for any reason or no reason at all, something that has happened in the past to at least a few people. If a title has been de-listed from digital storefronts or the digital store closes and you lose your copy for any reason, you may not be able to re-download it (this actually happened to me before nearly a decade ago, and is what made my anti-digital stance more ossified). If a title is only available digitally and you didn't get it while the getting was good, you ain't getting it all, maybe not ever (at least not legally).
Streaming is even worse than digital downloads, though. It takes the worst aspects of digital and combines it with the most annoying aspects of always-online services. Not only do you still own nothing, but your experience is completely dependent on both A) a constant internet connection, and B) the service being up and running. Even if you only play single-player games, if your internet connection goes down or the service is experiencing any sort of interruption, you don't get to play anything. Even if you have a connection, your experience can be affected the quality of the connection (lag in a single-player game... *shudder*). If a title is removed from the service for any reason, you don't get to play at all, perhaps not ever again (at least not legally). If the service ever gets shut down, well, you're just shit outta luck. Better hope there's an alternative. At least with digital downloads you have a local copy to show for your money, at least in principle. With streaming you can't even say that much. I'm fine with streaming for watching TV (it's basically just video-on-demand anyway), but for gaming I won't have anything to do with it.
If gaming ever goes all-digital (and especially if it moves to all-streaming), then I'm done supporting the industry. I'll still have several decades of classic offline games with physical copies to play.