Maybe, one more in valid reasons. - Less politics, and more autonomy (if you are given a certain role). - The dopamine or kick that comes with solving problems

Maybe, one more in valid reasons. - Less politics, and more autonomy (if you are given a certain role). - The dopamine or kick that comes with solving problems and the joy of getting results fast. Quite a few occasions, I have felt more involved in a startup than a big MNC. Maybe different kind of culture. (Consulting is the worst in case you like to see results for your ideas though)