Emotional stability.

 And yes, there are some young men who look for emotional stability in their 20s, they look for that one partner who'll start it all from the ground with them. They believe in building things and the charm of going through stuff hand in hand. They believe in experiencing and growing together. They choose to live it all with one person instead of having the same scenario but with different girls. But, ironically, they're the ones who live way more experiences and go through many relationships than other guys, and it adds to their maturity of course but, it's exhausting for them. They consider every failed relationship as a personal failure and disappointment. For this kind of men, living instant pleasures is a great warning sign that something is wrong, that they're not stable and not focused enough on what matters. Cause they're men of purpose. They're driven and obsessed with their goals, so they're constantly optimizing their energy and environment to always be in their greatest form and mindset.