I agree that we should share our music with other people, so maybe posting stuff on YouTube might make you enjoy what you're doing more. Another thing you could try is accompanying singers or instrumentalists for their lessons. You might not enjoy it that much, but it will definitely improve your musicianship at the very least.
Regarding not being into classical rep.. I was a bit the same way my freshman year, even though I was pursuing a jazz piano degree. I really loved jazz, so I liked studying music by Ravel, Debussy, Prokofiev, etc., to influence my jazz playing. From there, my love of the classical composers started in reverse chronological order generally, always with the aim of incorporating techniques used in the classical rep into my improv/arrangements. About a year later, I found that I loved the whole classical piano rep and wanted to focus on that exclusively, so I switched to classical performance. Now I am almost 30, and the canon of piano music is almost like a religion for me, so in that sense, the music provides me fulfillment in life even when I am not sharing it with other people.
I think not wanting to practice is the biggest factor if you are considering continuing/dropping piano. I have usually really enjoyed playing the piano in my spare time generally, so I haven't had a big issue with practicing (except when I was 10-14 years old). However, it definitely can feel like difficult work, especially when learning a new piece or drilling stuff. I also find performing to feel like difficult work sometimes.. there is a sense of responsibility and stress to do well, so it puts a dark cloud on the week or month leading up to it. But if you are considering music as a career path, it can be a really difficult lifestyle as I'm sure you know, so it's important to still somewhat enjoy the whole process even at its worst.
If I were in your position, I would maybe try to use the rest of this summer to learn rep that I really love, try to record one or two of those pieces and post on YouTube if I was happy with the recording, and try to analyze which parts of that practicing/learning process I enjoy or don't enjoy. Maybe doing something like this will give you a better idea of whether you should continue or not.