Long way of saying go for it man. This is no dress rehearsal. Remember, you are what you do. At this stage in your guitar playing career how does it feel? Ya? Wrinkles and rock? Great combo from where I sit. My body gets old, not my spirit.
Forget the peer pressure. You picked that guitar up now for the same reason you wanted to pick it up before, because it was calling you and you have something to say. The one item on the earth is calling you and you have something to say. You listened. Now speak, make YOUR music. Do not be afraid. It is YOUR time.