Why shouldn't I consider a hedge trimmer?
The main reason you might pass on a hedge trimmer is simply if you don't have many hedges or bushes that need regular trimming. If this is the case, you can probably get by with manual shears.
Also, if you don't care whether your garden is in pristine condition, your money would be better spent elsewhere. And on those occasions when you decide it's time to tame the wilderness in your front or backyard, you can always call on a professional gardening service to take care of it.