If you take that attitude we may as well forfeit for about 5 years straight, load up, make a run for a few years, then repeat the process.
Its easy to pick the field, but there's no fun in it. Didn't you enjoy the 2018 season? We know the ultimate goal, but as a fan I want to be entertained not grow old writing off season after season.
There have been plenty of teams who caught lightning in a bottle and won it all. Where would they be had they resigned the season?
Edit: there is value in gaining playoff experience as well.