it's inevitable that some people will panic when the market takes a steep drop. It's how other people deal with seeing their own losses. And whatever we do, it can't be changed. Some people do well under pressure, some don't. I place myself in the former rather than the latter. Losses are inevitable and the more we accept that, the more we get our emotions out of the way.
Like you rightly said, panic sell is something that will always happen in the market, we will always have newbies and those that are not so good at risk taking, panic sell sometimes can be fun, because it makes trading lively.
It is necessary for some to lose and some to gain, everyone cannot be a winner, it is now left to the trader to choose and be determined to be part of the winner group and try his possible best not to fall prey for panic sell and those who are eagerly waiting to take advantage of their weakness. The only thing I can pray for is that many of investors who panic sell still have little left they can bank on when the market eventually picks up.