Who's saying to trade them for nothing? So what, you just want to sign Lowry to a long term contract and stick with this maxed out and mediocre core for the next few years?
gross
If you can trade lowry for a draft pick and Gay for a package like the raptors gave up (Ed Davis), take it and run.
Now you have gained a couple of assets and maybe more importantly, cap space in the off season to add more assets.