Yeah 100% agree. For a WB to last 5 years you must shoot VERY little. I seriously doubt a WB would last me more than a month if I'm in my normal range of shooting. But I shoot a LOT. It's good exercise and it keeps me sharp for bow season. If I miss an animal, or even worse WOUND an animal, it's 100% my own fault with no excuses that way.
If you want to shoot more then go with a drop away as it will be worth the expense 100%. But if you are going to continue shooting minimal amounts, just go with a replacement bristle insert.