Should you take a 3 pointer story in your 2 week sprint?
Entire team should think on this and reply. Don't hesitate to dis-agree with me and feel-free to give your opinion.
Don't Take any story which is at the higher end of 3 points. ( when you think it is 3-4 or 3-5 pointer stories).
If one person thinks every story is 2 or 3 points which is okay. However, the rest of the members should think that one person is not going to code all the stories. Therefore, You should also think that you are going to code the story and do your estimation.
Keep in mind every use case has 3 part by default: