Generally speaking, there is no widespread sentiment among Canadians being mad that Alaska is not part of Canada. While Alaska and Canada share similarities in terms of scenery and geography, they are two distinct political entities with separate histories and governments. The decision for Alaska to become part of the United States was made in 1867 when it was purchased from Russia.
It's important to note that individuals' opinions can vary widely, and some Canadians might feel a sense of kinship with Alaska or have personal feelings about its relationship with Canada. Still, on a broader scale, there is no evidence of a collective grievance over Alaska not being part of Canada. The countries maintain a generally amicable relationship as neighboring North American nations.