> But I find it a little extreme to say "it's faster to build your own than to install an existing alternative".

Installing an existing alternative might be easy ... once you found the one which best (i.e. mostly) matches your requirements. The time consuming task IMO is the time needed to find and then choose between half a dozen (or so) alternatives which all might do the job ... until you installed them, tested them, and found that they are insufficient for the job you expect them to do.