It makes every part of your life easier.
- Releases endorphines to make you happy
- Makes you more attractive
- Helps you burn more fat
- Helps your long term health
- Gives you something to put into your routine to have a healthy habit
- When you do it and stick to it, the downside is you have to listen to occasional ignorant comments by people who downplay the benefits of this.
- Your sex drive increases
- Testosterone / you become more dominant
It's not easy either - lifting weights takes a lot more effort than jogging. You're more likely to be characterized as a brute jock, as opposed to biking / jogging where it's all glib hipsters.