CMV: The sanctions on Russia do nothing besides hurt and antagonise the civilian population, the war machine and oligarchy keep their money outside the country and will be the last to collapse.

Basically, sanctioning Russia will do as much good as sanctioning and fighting Iran has, it'll not affect the oligarchy and military at the expense of radicalising all the ordinary people. Russian oligarchs aren't stupid, they know how the economy works and know a billion ways to bypass restrictions. Sanctions in general have had a pretty lousy effect on wars throughout history, the only countries where sanctions can change anything are cases between close economic allies. US-South Korea sanctions or Taiwan sanctions worked to change their political system simply because the economy was built up on US capital, while in Russia the economy was built by Putin alone.

Then again, think of the "best case" scenario: the sanctions after years and years and years drop the country's economy down from a typical Eastern European country closer to something like India or Central Asia. Geopolitically, this'd be an even larger mess than what we have right now. Any protest movement that gets big enough that even the FSB, one of the most funtional agencies in the country that has complete control over it, cannot stop it, has a good chance of literal global destruction. The closest example we saw to protests toppling dictatorial governments in the modern era was the Arab Spring, which saw protests for democracy quickly descend into flurries of hate and radicalism and, unless dispersed by force, civil war. Imagine a Syria-like situation in the biggest country in the world with the largest nuclear arsenal. Dagestani jihadists gaining access to nuclear silos, millions upon millions of refugees, rogue security forces attacking Baltic and Nordic countries with little revard for international law or order. The long-touted "collapse of the Russian economy", if it does become strong enough to warrant political change, may quite literally destroy the entire world through the destruction of a nuclear power.

And remember, this is supposedly the scenario where the sanctions see an unprecedented success, while most likely they'll simply fail to hurt the war effort in Ukraine and business will continue as usual. There is literally no reason besides an emotional one to enact this policy, and when exactly have emotions and vibes been proven suitable for serious economic and foreign policy decisions.