Depends on how heavy it is! Think more in terms of total weight and how often you use something. And how important said item is. For example, a gallon of water is pretty heavy, but there's a 100 percent chance youll use it daily and Id rank it as the #1 most important piece of "gear". A toothbrush is reasonably important but since it only weighs an ounce and is small, its high up on things to pack. A marble collection is a bad choice because of weight and unimportance. A smart phone is probably a smart choice because it has 6000 uses and is pretty small. A huge 8 pound camera? Probably a bad choice unless your livelihood depends on taking photography for $$$.
Back to the tent now. If your tent is ultralight and you use it virtually every night, then bring it. For me, in summertime a tent is a must have because of mosquitoes. Its worth its weight in gold for that. In winter, I really dont need one.
