Which Hogwarts house will you be sorted into?
So I see nothing wrong with being cunning and ambitious. The first time I knew I was one was when Pottermore sorted me in Slytherin and I saw no objection to it. In fact, I knew that is where I belong. After that pretty much every sorting quiz did the same.
Some potterheads confessed that they manipulated the answers to be sorted into other houses when they were sorted in Slytherin.
Slytherin does not mean evil. Slytherins are more drawn towards dark magic because they want to excel. Frankly if I was in the wizarding world, if I had access to magic, I would be attracted towards towards it too.
I realised it again when I was watching "Once Upon a Time". Dark magic is definitely more powerful, and I most certainly do not have that annoying conscience that the protagonists are endowed with.
I would not necessarily use my power for evil if that is what you are thinking. But who does not like power, If somebody says he does not, he most certainly is lying. yeah well, even the sorting hat said nothing about Slytherins being evil, people cannot just interpret it that way.
Plus Slytherin has the best color combination of the four houses so we do look super chic. :P