A lot of community groups in this region have some kind of religious background and they often use the religious buildings (aa they are convenient spaces and don’t also provide a potential supply to large amounta of drugs and alcohol) but they do not try and covert you or pray in a community group that is not explicitly religious. As you are the same age group as myself I can see why you would be concerned as it may remind you subconciously of a junior school environment when everything was Christian (even in supposedly secular schools) and those memories last long.
I think its now illegal to covertly preach religion under the guise of an other group in the whole EU now in the same way its illegal to put 23% horse in the meatballs, unless it says on the label they contain 23% horse (and the ones in Groningen certainly do). If folk want to promote a faith group is is permitted provided they don’t breach other laws such as event licensing/building planning and aren’t in any way extremist.
There are lots of similar groups round here which are run by Christians, Muslims, Buddhists but they don’t preach to the service users and the different religions all work together to a large extent.
In any case I think Roman Catholicism just teaches you to manage any addictions/vices (so they don’t harm others and stop you functioning in life) rather than stop with them altogether 😉 (I would not be able to stand up if I had drunk the same amount of Guinness and gin each nun in my sisters school did; the years supply will fill up a whole isotainer)
