Many bands that I like that have longevity on their side...

Many bands that I like that have longevity on their side with consistent members are even splits. It makes a big difference to have the other two guys involved every step of the way. It keeps the thing moving. Everyone is taken with equal degree of seriousness. It's not just because it's a four-way partnership. It also relates to taking things maturely and taking other people's thoughts into consideration.