Four reasons for my being into vinyl:
1. Often the sound quality of vinyl is better than CDs. Not because of the vinyl itself, but because the mastering is better.
2. Some music I like only comes on vinyl now, with underground artists doing vinyl-only releases.
3. As a physical artifact, it's preferable to a CD and---especially---a digital file to me. I like being able to hold an object like a record in my hands. There's something alluring about it as a formerly antiquated medium, especially in today's digital age. It demands you take your time and slow down to enjoy it.
4. The artwork and linear notes that go into vinyl jackets is usually more elaborate, which I prefer from the perspectives of both observer and archivist. I've known some artists who designed vinyl cover art for a living, and they put so much effort into it: usually listening to the music for like a month before attempting to translate it into the visual realm. Both because of the size of the jackets and the ethos of record labels (many labels putting out new vinyl today are smaller and more hands-on with every step of the production process) vinyl tends to have more care put into its release today.