Thanks to all for your replies. Some of them have made me a bit more optimistic about the future of GPU mining.
I would not believe the information from this forum. It is flooded with noobs that have no idea about mining.
At this current time ETH allocates for over 77% of emission to GPU miners. Once it will go POS all GPU miners around the world will have 77% less profits altogether.
Miners with a lot of knowledge will probably be able to find new coins, but miners that use whattomine, nicehash and other "default" mining strategies will be defensless.
Just my 2c.