What explanation does research give for the finding that volunteers with egoistic motives tend to remain active volunteers longer than those with more altruistic motives?

Question

Quizplus · Accepted Answer

Altruistic motives may not be as sustainable over the long term when volunteers face personal costs or challenges associated with their volunteering efforts. Egoistic motives, which include personal benefits or gains from volunteering, can provide a more durable motivation by aligning the volunteer's interests with their activities, thus potentially leading to longer service.

What Explanation Does Research Give for the Finding That Volunteers