Let's remember prior to the American revolution a great deal of time was spent trying to get the king to cede to the demands of the colonists. The efforts at avoiding the revolution were quite substantial.
I think substantial effort must be expended to avoid any revolution. These activities include writing our elected officials, peaceful protests, acts of civil disobedience, etc. Only when all of that failed after being given a substantial opportunity would anyone even be justified in thinking about a revolt.
Revolution is not a good thing. They often destroy the very insitutions necessary to get back to a peaceful civil government. And very often people with repressive and undesireable beliefs end up leading the rebels and should they win it can be very bad for those not siding with the rebels.
The American Revolution is rare in history in that the results did lead to more freedom. Now you can argue that many did not acheive more freedom as a result and you would be correct but that was due to the cultural values and norms of the time and not the result of the revolution.
The ultimate result of the American Revolution was the US Constitution and that started us on the path to a great deal of freedom for all Americans. It contains a process to amend itself so that when we think it needs changing it can be done but it is purposely difficult. The process was used to end slavery, protect and expand voting rights, allow 18 y/o's to vote, allow for direct electin of Senators, and even codify many of our god given rights in the Bill of Rights.
Very often revolution results in less freedom and not more. Think Taliban, French Revolution, or Russian Revolution.
When you think of armed insurrection and the chaos that would follow think about a Mad Max type world and you would get very close to what the world might be like.
I swore an oath to support and defend the constitution and to obey the orders I am given. As long as the consitution is still the law of the land and it is being followed, and I don't mean my(or your) interpretation. As long as the people vote to elect the president and congress and the supreme court is interpreting the law, which is the interpretation that counts, I can't see any reason not to honor my oath.