I understand he was quite tired of being the Emperor, so he didn't push for a revolution (one might say the same happened in Portugal, with the last King, Manuel II, not really showing any real interest in taking a throne that was supposed to be for his murdered brother).

Still, everything I've read about Pedro II seems to make him a great emperor. Brazil growed non-stop with him and he seems to pretty much always take the best option for the country. So why, when the (small) revolution ended the citizens didn't express their support for him with actions and not just words?

It just seems weird that a thriving country decides to change the political system and the population seems to not care at all about it.