Fuck disposable razors.
Yeah, I'm not sure it can be said any better than that.
But where and/ or how can I get one of ^ those ^?
You can buy them online.
There's also a national chain that's popped up in the last few years called The Art of Shaving, they have a very good selection of straight razors and safety razors, along with all the other paraphernalia.
You have to keep them ....gasp....sharp. Not sharp in the kitchen knife holder, you have to learn to strop them. Learn it or suffer death by a thousand cuts.