Health and fitness for most men either relies on strength training and/or running. There is a good reason for this.
The benefits of lifting weights for increased self-esteem, physical and mental toughness, not to mention looking great, are well known. All men should do it, and if you aren’t why not? Get motivated and get back in the gym.
With that said, weightlifting and occasionally pounding the streets or treadmill shouldn’t be the only exercise you do. There should always be room for other things that bring something new (and awesome) to the table.