I have the 128gb, which actually is probably even overkill for me as the actual VR apps and games are not that huge. I just tend to always get as much storage as I can. You would be fine with the 64 gb version. It's also incredibly easy to remove stuff you're not using and reinstall later if you want to. I think i read somewhere that every single launch title (the 50+) would all fit on the 64gb at once. I believe it has about 50 ish gb of storage (the OS has its own space blocked off). An extra $100 was a bit pricey for double the storage, but I'm easily seduced by such stuff lol.
BTW, I am not sure if I mentioned this before, but I do understand the skepticism around VR. Before I bought my Rift, I was extremely skeptical. I thought it would be gimmicky like 3D movies. I was completely wrong. It is not something you can really convey to someone else, they just have to experience it for themselves. I'm glad my first experience was in a high quality VR headset.
Even owning the higher end Rift, I'm blown away by the Quest. The visuals are not quite as impressive as on the Rift, but that's only one part of what makes up the VR experience, and the visuals are still fantastic. The ability to move around while in VR without worrying about wrapping yourself up in a cable, and also being able to take the headset with you into different spaces (in my living room I mainly use it sitting in a chair or standing, while in my extra bedroom which has a lot of empty space I move around a lot with it, and in my bedroom I use it sitting or lying down) just completely changes the experience exponentially. The Oculus Touch controllers that are included with the Quest are the best VR controllers available. It feels very natural holding them and using them to manipulate things in VR. This probably sounds ridiculous, but just the simple act of using your virtual hand to pet an animal is incredibly engaging.
My favorite vr experiences are not games. There are some fun games in VR, but it's been other experiences that have engaged me the most. I bought an app yesterday that has various environments in it that you can explore to help you relax. It also lets you interact with the environments in ways that feel magical (you open a menu that has bubbles with different things in it that you throw out into the environment to change it, like to make it rain or plant a tree or an explosion of butterflies). One environment had branches that had birds on them, and you could pick up the branch and pull it close to look at the birds. The whole thing actually made me kind of emotional, which is something I often find in VR. This isn't something I can really express to someone else in a meaningful way, it is just something you have to experience.