There are many risky things that an average person does in his life all the time. Even when you decide to cross a busy road you put yourself at the risk of being hit by a car, but this does not prevent you and discourage you from crossing that road. the same applies to the Internet. You decide to use it and surf it knowing that something bad might happen to you. Of course, the more careful you are, the smaller the risk that something bad will happen to you.
When you are new to the Internet, you might want to learn something about Internet security to avoid many unpleasant surprises lurking in so many places all over the Internet.