If you leave the market now you can lose a lot, and if you left the market late 2017 you didn't lose a lot but won a lot.
But many people has lose in the last year and some of them leave the market with a big disappointed and they hope that they can turn back time to 2017 so they can sell all the coins they have.
I think right now, and they have a chance to come back to the market since many coins have to get started to increase and I believe that it will not takes too long to see all coin can increase higher. Some of then has already increased up to 20% from the lower price, but unfortunately, it's only for temporary. But it's a good sign for us because all coins can survive until this day, so we can hope that it will increase higher in the next months.
Many of those who left the market at a loss could be broke and not even have the funds to buy back in.