Space! Or No?

My question for the day comes from the debate between Lauren and her father, applied to a modern-day debate. Is it feasible to think about starting to colonize other planets with over population continuing to occur? Or is it better (an more cost efficient) to find new ways to create a comfier, healthier way of life on Earth without making any of the populace uncomfortable or putting them in a ‘bad position’ (this could mean a number of bad things depending on which scope you’re viewing from).