the invasion would the stupid and hardly beneficial for Russia and the logical thing would be to not invade. But I will add that I said the exact same thing about the invasion of Ukraine and we know how that went.
The main difference here though is the consideration of NATO. If you attack Ukraine you’re attacking one country, if you attack NATO you’re attacking many, including the United States, the United Kingdom, and France, who have some of the largest military’s forces on the planet and access to nuclear weapons. Russia had reason to believe it might have actually win against Ukraine, there’s no possible way they can think that they could win against NATO.