I have had my Thermapen for several years. I resisted buying one due to cost but finally succumbed when they put them on sale and bought one. Now, I would NOT be without one! I have even "caught" my wife using it in the kitchen. It will definitely help you to "up your game".
If you can't justify the Thermapen, then take a look at their other offerings. They have some less expensive types that are just as accurate and almost as fast. EVERYONE needs a good "instant" digital thermometer...