I'm not certain what you are asking. Tipping in the North American fashion is not the norm in restaurants in many European countries (or other countries around the world).

Again, 'Europe' is a large number of countries each with different cultures and different customs and habits. Grouping it together as 'Europe' and expecting people to behave the same everywhere just isn't reasonable.

There is a cultural difference which Fredd tried to explain (quite well, I thought) between how many people behave in the US vs certain other cultures in the world. For instance, in many parts of the world it is generally considered intrusive or even rude to ask overly personal questions. Smiling at strangers is considered rude in many parts of the world (or one may be thought to be slightly 'off' if one walks down the street smiling at random people) My posts may be considered straightforward by some readers here, while others may think me a big poopyhead.

One of the common complaints from some North Americans who visit France is that 'the server ignored me' or 'the meal took too long'. That is just a difference in how things are done. (And all of these are generalities and not intended to paint people with a broad brush, but I am trying to explain in very simple terms)

Rather than assuming that all cultures behave the same or follow the same habits in 'Europe', why not purchase a book and read about how these things vary from country to country, and even region to region? Even in Germany things can vary from north to south to east to west. There are some good books on the subject which give basic advice for a number of countries.

The same holds true for tipping. Just because one tips in North America does not mean that one should tip in other parts of the world. In fact, as pointed out here on this thread several times, tipping certain positions in certain countries can even be considered rude or offensive. Best to read up before one travels, to be prepared for these variances.