We know that aging decreases skin thickness and elasticity, and it is likely that collagen is a good part of the solution. If we care about slowing down and reversing skin aging, we should care about collagen too.
Women have the right to be annoyed at this inconvenience that makes us age too soon while we are living full and demanding lives. What was good for the cavewoman (who was going to be eaten by a lion before 50) is not good enough for modern women. At least, not for me.