Why, Sherlock?

Sherlock Holmes and Co.
At least 100 years plus
Still fascinates today
Because evil will always
Have enthusiasts
And solving or guessing
The reason for crime
Will drive detectives
As well as ordinary people
As to why committing
Whatever deed
Is deemed against the laws
Up the garden wall
As to motives when
The reason might
Just be because ....
Ach, due to humanity's
Inconsistency and frailty
Or just because you could?