I indicated that "experimenting" (as you have suggested as a course of action to the OP) with someone amounts to being used.

If the person who is "experimenting" with you is upfront and honest and lets you know that this is what they are doing, then yes, you are in a position where you can make the decision as to whether or not to continue to see them.

Unfortunately though, not everyone is this honest and as a result, people can get hurt. I've seen it happen.