Quo vadis Deutschland?

Are you familiar with this feeling of deep gratitude and wonder, when you pick ripe fruit for free?

Wow, I am in my mid-thirties now and finally learning how to fight. It touches something deep inside me and ... heals some bad memories (of feeling powerless in aggressive situations) from my teenage years. I feel empowered and deeply satisfied by this practice. What do you folk think: Does a man have to know how to fight - not least to defend his family? What style/practice/sport is best for self-defense and fighting skills?