There are a number of reasons why inflatable boats make a better choice than the more traditional aluminum or fiberglass boats. Depending on why you need a small boat will depend on why you are better off with an inflatable.
If you are a fisherman, a lightweight inflatable canoe makes a much better choice than a traditional hard shell canoe. With an inflatable you will be able to carry the boat to the river or lake by yourself, which is very handy if you prefer to fish by yourself. Also you will be able to transport the boat to and from your fishing site easier and without fear of scratching your vehicle if you choose to transport it on top of the vehicle.
If you are a yacht owner looking for a tender for your larger craft an inflatable boat is the best choice for a few reasons. It is very important to yacht owners that they not scratch their beautiful boats; with an inflatable, those concerns are virtually eliminated, because these boats are made from materials that are soft and will not mark the surfaces of other boats.
Also, because inflatable boats are lightweight they can easily be brought on board when the yacht is under sail. However, just because you have an inflatable does not mean that you cannot attach a trolling motor to it. In fact most inflatable boats allow quite large motors to be attached to them. Although many inflatable boats are not built for performance and speed, some are built for speed and efficiency. However, even if you have a motor you should always carry paddles with you and you should always wear a life jacket.