So, don't sell to them instead, hold patiently and in matter of time depending on your goals and assets values, you could imitate them (whalers) or could even be one in the future.
Everyone has personal Bitcoin plans. Some people have decided to sell their Bitcoin at a particular price. Maybe they needed to sell to enable them to take care of certain needs or investments. I know people who needed to sell their Bitcoin because they wanted to buy a house or start a business.
My advice is that don't sell because of FUD. People are always willing to buy your coins at any price. Only sell based on your plans. Except if you intend for your family to inherit Bitcoin, you will have to sell it one day.