Our next door neighbor's house was broken into over the weekend, which made me realize that the original lock on our 1950s home is....next to useless.
There's not a whole lot of valuable possessions I care about protecting, really just the laptop and the many bikes (unless thieves would take things like a cast iron skillet or my favorite dress!). I suppose they could take the TV but I don't really care. My biggest concerns are (1) someone might break in while I'm teleworking, since we are soon to be car lite and without a car in the driveway they might assume no one is home, or (2) someone might break in while we are out, but the dog is home. He would never hurt a person but they wouldn't know that and might hurt him. :(
(Also, for those suggesting a dog is a good enough deterrent - I highly doubt it, unless they ring the doorbell first. He's great at barking at the doorbell but when we come in we usually have our coats hung up before he bothers waking up and coming upstairs to say hello. He's a lazy guy.)
So it seems worth it to get some sort of deadbolt. I did a brief search and found some sources saying that many today are next to useless, but the recommended ones are pretty pricey. Is it worth it? A home break in is not something I really ever worried about, but when it happens just next door you do tend to think twice.