I totally agree with you! I had my first relationship when I was 18 till 22. Since then I appreciated being single and traveling alone. You confront yourself a lot more and learn who you are! Now at 27 I am together again with a girl and I think I offer a lot more then I could if I didn't get to know myself!
Frowning upon people who enjoy being on their own is weird! You are your best friend, doesn't matter how you look at it! I am happy you found this out and keep enjoying your own company!