One thing I've always wondered about when it comes to the temporary nature of US presidential terms and their respective administrations - why does it seem like it's so much easier to dismantle things than to create them in the first place? Especially for things that took a substantial amount of time and effort to build, shouldn't we require much more scrutiny before considering an action that effectively dismantles/…
it's because it's incredibly difficult to get anything passed, the US legislative system has too many checks and balances. Every "check and balance" is another group that has to reach consensus for a proposed action and another point for an adversarial opponent to grind everything to a halt.
I contend that it is better to have a government that can reach consensus easily and act, and that is easy to change if they no longer reflect public consensus, than to have "checks and balances" where absolutely 100% of the government needs to be in consensus to do anything. Gridlock should not be a design feature of a government but that's how the system was engineered (deliberately - it dates from a time when states didn't view themselves as federal subjects but independent states, and this was supposed to help get everyone on board that "no, really, we're just going to do the things that absolutely everyone agrees on", there were many groups who were afraid of being steamrollered without their own special little body and checks on other authorities).
Unicameral parliamentary systems are better - one house to pass legislation, one PM who is a member of the majority in parliament, so everyone is on the same page. Snap elections if they do something that nobody likes, if they don't want to listen to the public then the queen can dissolve parliament and call for new elections.
(the queen actually is a very interesting role in the UK, she is kind of an "oracle" that decides deadlocks between the public and the parliament. When the two are in disagreement about whether to call elections she can resolve the stalemate. She really doesn't do much normally but in times of constitutional crisis can serve as a trusted independent authority - a very interesting safety mechanism that evolved almost by accident.)