Proper fitting was addressed previously and it was concluded that if you do not have enough toe room, they need to be larger. However, it does not necessarily insinuate that you should scrap them. In fact, there are ways that you can add toe room to your boots. Firstly, try removing the footbed and replacing it with a thinner insole.
If this does not add enough space, also consider purchasing a thinner pair of socks as these can be the catalyst to why you have no room. If neither of these does the trick, take the liner out and stretch it over a handle. Or, if none of these remedies work, you can simply take it to a repair technician and they will heat mold the boot to contour to your foot.