if we embrace our differences, it can lead to a more interesting life where we can think about more ideas.
First of all, probably this is the first post, I felt your emotions in so many years and this openness to embrace differences give a sense that you are pretty open-hearted and quite logical ( or realist as you say).
if you consider yourself an optimist, a pessimist, or a realist, whether you’re happy with that characteristic of yourself, and if so why?
I would say, I am a mix of optimist and realist mostly (like you), and happy that way. I have faced many challenges in my life, survived many failures (because of others) but built them again and again - the optimism helped there. But as I am getting older, I feel better being realist (May be we achieve more wisdom from our experience !!). And honestly, I am slowly feeling, its best not to be biased nor confront :)
A mix of optimism and realism is a good choice I think. Helps you to take some chances, but still play things a bit safe.