Actually. Why not? Suppose we did… Let’s investigate.
1 x a half = 1 half = 0.5, if you use decimals
2 x a half = 1 whole = 1 , which you can also write as 1.0
3 x a half = 1 and a half = 1.5
4 x a half = 2 wholes = 2.0
5 x a half = 2 and a half = 2.5
6 x a half = 3.0
Notice anything?