Are bilateral series better for ODI cricket than tri-series?

There are no neutral games in bilateral events, which means all games will be well-attended. Besides, they assume added context when they are part of a full tour that includes a Test series.

Watching two teams play each other repeatedly can get boring. Longer bilaterals stand the risk of becoming one-sided and aggravating very quickly, and in the worst case, could feature dead rubbers. On the other hand, tri-series will very rarely feature inconsequential games.