Well, unless you're actually really happy with your current employment and income. In that case, why even bother looking for something "better"? At that point that's just greedy.
You have zero pressure, you can practice interviewing, network and you can make extravagant requirements. If it doesn't work out, no big deal, you like where you are. But if it does, your career can make quantum leaps.
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".