Before I knew what it was, I may have had one very semi-lucid dream a LONG time ago like when I was 7 or 8. 9 years later I find out about it and techniques on how to induce lucidity in a dream, and even though science says we dream less the older we get, I'm getting more and more LD's the more I practice. It is a learned skill, and I believe everyone can learn it, but like with all learned skills, not everyone will become proficient at it, and very few will master it, if any at all.