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.