"Or is the key message of conservatism something else?" It depends on the conservative. It's a broad camp. Some people who call themselves 'conservative' are r

"Or is the key message of conservatism something else?" It depends on the conservative. It's a broad camp. Some people who call themselves 'conservative' are really just super reactionary people who hate any kind of change while others are reasonable people who want to be careful. US politics is highly partisan right now so there is a lot of conflict that has more to do with team or tribal affiliation (republican or democrat) than with actual ideological or philosophical differences. Traditionally, though, conservatism as a school of thought originates with the writings of Edmund Burke on the French Revolution, where he pointed out, not that social and political change were bad in themselves, but that the Revolution in his opinion, was going too far too fast, breaking with too many traditions, and was thereby sowing the seeds of its own destruction. He argued that because the French Revolutionaries were attempting to replace widely held (in France at the time) principles of political legitimacy with novel principles of the political legitimacy, that politics in France would break down into practical power politics and would result in a military dictatorship. His prediction turned out correct, though people still debate his reasoning. So, in this sense, conservatism is the idea that traditional political institutions have value because they are traditional political institutions. Change is not inherently bad, but must be undertaken carefully because if you overtly discredit the current institutions you court instability and the new system might not be better.