[F_J_H]

I think only you can answer that question. Aside from the ethical reasons, at the end of the day, you should take the steps necessary to achieve your 3, 5, 10 year goals. Any company you work for will have pros and cons for you personally, whether other people believe they are childish or not.

What is it you want to do? What do you want to learn while getting paid? What do you need to get you to where you ultimately want to go? It is like when some asks me if one programming language is better than the other - the most honest answer I have seen anyone give to that question is: It depends on what you are trying to do.

If you want to start your own company one day, and don't like things as formal as they are in large companies, I would encourage you to work for a start up or small company. Things will likely be less formal, and you will likely get the opportunity to do a lot more things since in smaller companies everyone usually has to where more than one hat. Plus, its easier to have a big impact.

Just my two cents.