Have a CS degree, > 5 years experience. Full stack engineer and have a good paying job. I want to interview to basically test the waters and see if something good comes up.

It seems the tech companies will spend calling you, paying for your flights and meals, spending entire days interviewing you but at the end say "sorry we will not go ahead with you, we don't give feedback"

May be the more time you spend writing code on an editor, the worse you get at writing code on a whiteboard.

I can't quite figure it out. Anyone else feel the same. May be the valley has shortage of "cheap" engineers.