Sounds like your should stick with your start up. Fix the problem instead of giving up. The problem being, from what I read, you are dissatisfied with your current level of social interaction.

Establish a routine in which you regularly interact with people. Consider taking 5-10 hours of your week (or whatever works for you, and devote it to something unrelated to your startup. A part time job in a social place, like a cafe, or perhaps volunteer for a cause that matters to you. Check out classes in your community that you might enjoy. Maybe a martial art, or other physical activity to get two birds with one stone.

If you want to find more like-mind people, look for entrepreneur's and small business networking events and meets ups. You don't have to be in the valley to find people that are working on making a successful business.

Best of luck to you!