Whether you are a DIY exponent or professional tradesman, would it not be nice to have everything exactly in its place?
This so that you never need to delay the next movement of your current project. Particularly for professional tradesmen such as those in the locksmithing business which entails quite a few emergencies. People are locked out of their premises or property late at night and are desperate to gain access. Worse still, people could be trapped inside and there could even be a fire outbreak.
This latter emergency, of course, is a bit extreme. Because it is then that the fire department would be called and their attendants would not hesitate to barge the door down, locks or no locks. But under the usual circumstances, every inch of the tool helps. Would it not be nice to arrive at the point of departure, quickly whip out the tool after the brief inspection and just open the door already.
You can do that quickly enough when you can find your required tool right enough. Usually it is already clipped to your specially prepared tool belt. But would this not be a tad uncomfortable in the sense that it could stifle your movements when endeavoring to open jammed doors or windows without breaking them. Would it not be better then to have one single locksmith tool set for once and for all.
No downtime and no panicking customers having to wait impatiently while you fumble about. Because you open the lid of your nifty and compact little toolbox and there she is, you have found the minute pick you were looking for. That was all you needed and the lock is opened in a minute, nothing broken and no-one harmed.