When we look towards the draft, we look towards the future. It isn't always the immediate future - really, unless you're picking at the very top (knock on wood), it rarely is - but the draft is for bringing young talent in, and making teams better for years to come.
The Flames have had a lot of success in that area lately. Players like Sam Bennett, Sean Monahan, and Johnny Gaudreau are all young additions to this team over the past few years: all picked up during the draft, none likely even in the primes of their careers yet.