For my main website, I have Google Analytics set up, and every month I check it and compare to the previous month. Every month, I have a few more unique users, a few more "sessions" (page hits), some new countries in the demographics. Even if it's only one or two people in Sweden or Indonesia or wherever, it's a really cool feeling to know that someone, at some point, bothered to click on my site and read it.
Another thing that makes me feel better about a low number of subscribers, is that I have consistent commenters who leave a comment or like every page. They give me lots of great insight and generate interesting discussions both on Tapastic and my website. Even though it's only a few, they are so wonderful, and I'm so thankful to them.