Why does the US love impeaching presidents?

The worst job in the world is the president of the United States. As soon as the celebrations are over and the honeymoon has gone, whoever is president of the United States has nothing to look forward to but criticism, battles with Congress, snubs from world leaders, and, eventually, impeachment. Even poor Joe Biden who everyone is supposed to like as a decent bloke is now facing some mad impeachment drive by a dippy Congresswoman who wants him out of the White House for failing to control the rush of immigrants across the border into the US. You just can't win as president. It will come to nothing but if there's a Democrat in the White House the Republicans will want him impeached and vice versa. Trump faced impeachment pretty well as soon as he was elected. The fact is with politics in the US there are enough scary people elected to office that the country can never carry on like a normal nation. There is always someone plotting to cause chaos. This is Washington politics in a nutshell, with the emphasis on nut.