Was New Horizons worthwhile?

The New Horizons mission to Pluto cost $700,000,000 over a 15-year period or about $46,700,000 per year. Vox does some comparisons re cost.

• The F-35 fighter will cost 2,142 times as much as the Pluto mission
• Improper Medicare payments cost almost 1000 times as much each year as the Pluto mission
• NFL stadiums cost taxpayers more than five Pluto missions
• Destroyed weapons cost 10 times as much as the Pluto mission
• Minting pennies and nickels costs twice as much annually as the Pluto mission
• Annual payments to dead federal workers cost more than the Pluto mission