Don't know about you guys but when I can't find anything I always break out my back-hoe that mysteriously follows me around everywhere I go. Or I break out a deep seeking sonar to peer underneath bad ground and concrete. I also take the crap I find and sell it for 20 times what its actually worth and they always seem to buy it.
All in all...I have been detecting for 11 years and I have those frustrating days. I have not dug any silver for almost 3 years. Then I dig not one but two Barber dimes (1912 1914) this year inches apart. Never dug those before and I danced. I have days when I don't find any keepers. When I first started I was about to quit. Then with time, mentoring (William R. You know who you are) and patience, he taught me that it wasn't about finding stuff all the time. It was about doing something fun and getting out. The plus to detecting was the workout, the sights, nature and of course those finds that makes you scream!
Sure there is the research and the areas nobody has every stepped foot on for over 100 years and you pull out tons of cool things. You also pull tons of junk out, but in the end it comes down to taking your time, learning the machine, getting rid of trash in the environment and holding that piece of history nobody has set eyes on in years. What you do with it after that is your decision. Me...I share it with friends and family and tell stories about what it is, what is was and they may have some stories to tell you about it. I then pass it on to my family. Hopefully they will keep it as I have and show it to their families.
Just my two cents (I hope they are Large Cents...I prefer flowing hair)