Wikipedia about the history of the plumbers
Quick look in to the history of the plumbers, thanks to Wikipedia:
The word "plumber" dates from the Roman Empire. The Latin for lead is plumbum. Roman roofs used lead in conduits and drain pipes and some were also covered with lead, lead was also used for piping and for making baths. In medieval times anyone who worked with lead was referred to as a plumber as can be seen from an extract of workmen fixing a roof in Westminster Palace and were referred to as plumbers "To Gilbert de Westminster, plumber, working about the roof of the pantry of the little hall, covering it with lead, and about various defects in the roof of the little hall". Thus a person with expertise in working with lead was first known as a Plumbarius which was later shortened to plumber.
Drain isn't draining
Even though we landed on the moon and are able to comunicate freely across the globe in real time, we still are sometimes stumped by mundane things like clogged pipes - what do we do then, in our hi-tech, modern times?
The same thing as always - call in the plumber. There maybe quicker and cheaper solutions, of course - but unless you are sure that drain cleaner isn't going to melt your pipes, or actually just do what it is supposed to, it is better to leave it to professionals.
There are some things, in the pipes, that you don't want to see - trust me on that. Besides, expert plumber can always recommend what to do, to avoid this kind of situation, and which products to use if need be.
Other than that, it usually takes something more sophisticated than a plunger, to get rid of the clog - if you even have that to begin with. So don't fret, or take this as an insult to your aptitude, and contact with plumbing services.
Water where it is not supposed to be - in general
The pipes, whole drainage system, is such an essential thing nowadays, that we rarely even think about it. Until it breaks of course. Than it is the only thing on our minds - mostly because water isn't the best thing for your furniture and flooring.
It is good to have trusted plumber in times like this, but what if he isn't available? There are some times when you need somebody ASAP, and one man business isn't going to come to your aid. Emergency plumbing services is the answer ? company with more than one plumber, on standby.
All in all, it all comes to trust either way ? You need reliable emergency plumbers. But they all usually have what it takes, to fix your water issues. Besides, it's not like you won't try anyway ? right?