Thank you all.

@Bachus: The churches are presently short of organists, if you take lessons, practise hard (feet coordination is a really tough problem the first year even if you're very good on the piano...) and make a two-year course for "C-Organist", you will easily find an employment and be "bevorrechtigt" too
But you're right, sometimes I forget that I should also be thankful for having the possibility to play on one or two nice pipe organs every week and to have nearly unlimited access to one of them. And both sound really nice - in contrast to some very small pipe organs in modern congregation rooms in other parishes which sometimes sound very acute.