I don't think any snake is aggressive by nature. The won't seek to strike or come out of a safe place to strike.
Actually, there are some (different species) that will come out of a "safe place" to strike.
They are just defensive and nervous.
I just like the "Attitude" of a wild caught snake more. <snip>
. . . but I just find the defensive nature of them fascinating.
I see what you meant.