I deserve retribution!
The tribe is growing and as its dominant leader you now spend a lot of your time managing things and discussing matters of the tribe, with less and less time to participate in lower tasks and work like any other tribespig.
And what would the tribe become without your benevolent work ? Don't you deserve to be rewarded and assisted for your hard work ? And how can you earn the respect of the tribe if you just appear to be their equal? Then some will always try to contest your legitimacy as a ruler!