In Mahayana Buddhism, and maybe especially in Tibetan Buddhism, there is a strong emphasis on seeking awakening for the benefit of all beings.
And there is a pretty obvious reason for that:
If we attain awakening only for our "own" benefit, then that's it. It stops there. (Not really, but that may be the attitude.) A seed is planted in our human self saying that Enlightenment is it, that it is a goal in itself, and that the continuing healing, maturing and development of our human self is not important.
On the other hand, when the invitation to benefit all beings is planted in our human self, it serves as a catalyst for this human self to continue to heal, mature and develop before and after realized selflessness. The intention comes from from, is form, and is a catalyst and guide for the unfolding of form.
It allows for Self-Realization as well as Enlightenment.
It allows for this human self to actively seek to heal, mature and develop, before and after realized selflessness, because it recognizes itself as a tool for benefiting others in the world of form, even as all these beings, including itself, are absent of any I.
It continues to play the game. It embraces the Absolute, the field of seeing and seen absent of I anywhere, and the relative, including the myriads of beings, the field mistakenly identifying as a finite being and experiencing suffering from it, and the possibility to help the field to wake up to its own nature as the Ground of seeing and seen, inherenly absent of I anywhere.