^ It doesn't matter HOW MANY D AMN SETS OF TOOLS YOU BUY, you will immediately encounter a fastener for which you do not have the tool.
This goes back to city-boy engineers that are only MAYBE book smart but have never so much as changed their own oil. If they ever tried to work on their junk they'd put serviceability for the end user higher up on the list than last place. That includes choosing readily available fasteners and fasteners that fit commonly owned tools.