Job hunting can be a life changing moment. Something that will, literally, affect the rest of your life. If only because salary increases compound over an entire lifetime of working.

In other words, a $10k increase in salary might not seem much but it will add up, and not only will raises compound as well but future jobs will start at a higher negotiation level as well.

Of course, spend your time wisely but I think it's really short sighted to think "I'm happy at my job, I am going to completely block out all the recruiters out there".

You know what could give you more free time? A better offer from a different job. Or more money. That can typically be exchanged for free time too.