What do you personally think that Jesus taught and why does it matter now?

[Longfellow]

This is not only for Christians, or even for followers of Abrahamic religions. Other people might have opinions about what Jesus taught and why it matters now. For some people, what he taught might be "nothing" because they don't believe that there ever was such a person as the one in the gospels. Then if they want to, they can say why that matters to them.

I'm not asking for proofs, reasons or Bible verses. Just what you personally think about what he taught and why it matters now.

This question came to me while I was thinking about what I might want to post about, if I keep posting here.