Remember that a share of stock represents a part of a business and is not just a piece of paper.
We don't put the same amount of money in each stock.
Each year we buy stocks and they go up, we sell them and then we try to buy something cheaper.
I find it helpful to buy near the low of the last few years.
Yes, Warren has done very well.
The market is a very emotional place that appeals to fear and greed.