>>3043709Camera straps don't really work for larger cameras unless it's one of those rapids, slinging a full size DSLR with a decently sized lens is a real pain in the neck of you use a stock strap.
The strap also often gets in the way of the controls/LCD when you actually want to shoot.
The alternatives are a grip strap or a belt and clip system, which I think are better all around. If you're shooting in public spaces, you'd probably want to carry the camera concealed in a bag until it's needed anyway.
For small mirrorless cameras I think a strap is fine.