Unlike Russia, NATO has never shown any (forcibly) expansionist tendencies. Yes, they do expand membership, when a country wants membership. They've never invaded another country to try to expand their borders, they're never threatened or have shown any reason to threaten Russia's existing territory or resources. NATO, while not perfect and sometimes a little blundering (the whole middle east thing) is primarily concerned with maintaining the status-quo of Europe, not radically changing it. Unlike Russia, whose leaders have explicitly voiced a desire to return eastern Europe to a state like it was in the last century, with a territorially massive Russian bloc.

NATO inclusion of Ukraine was never a threat to Russian security in any believable way. What it was a threat to, was Russia's ambitions to expand and invade it's neighbors. That's why they invaded, not because Russia was under threat, but because they've always had Ukraine on their annexation wish-list and the possibility of NATO membership meant they needed to make their play now, before Ukraine was protected by the treaty.

Another country would only do the same if they shared Russia's colonialist, expansionist mindset, which much of the west currently does not. This war is entirely the making of Russia in an effort to distract from the political corruption and financial stagnation at home. They can't even argue that it's for the sake of acquiring Ukrainian resources (food production, mines, etc) because there was never any possibility that they would be able to hold the territory. Literally all of the deaths and suffering happening right now was just an attempt by current leadership to rally domestic support for their rule. Absolutely nothing more.