Chieftess said:
Since you're from Germany, I'll ask it in German (but please answer it in English if you can).
First, despite living in Germany, I'm not a German, and German is not my first language (I do master it fairly well, as proven by the fact that I regularly write for German-language press). Second, your German is a lot worse than my English (sorry). Third, your clarification above was enough, it wasn't a language problem after all, it was the context of your questions which you originally left out.
I am, if you will, a "Worker Tech" player in my single games. My general strategy in the early stage is to build a few cities in a very short time (with some chop-rush) to secure important resources and strategical locations. Researching worker techs help me doing this, and the effects of those techs (higher production) multiply with the number of cities.
To answer your original questions in detail:
1 - The lack of monastaries that we'll have?
After adopting State Religion (which I usually do after I discovered my first religion) no Monatary is needed to train Missionary any more. The Research bonus is compesated by a higher commercial productivity due to the "worker techs" and buildings.
2 - The lack of a potential shrine to give 1 gold per city with our religion?
That's not much. The Colossus brings more Gold, for instance.
3 - The lack of religious espionage?
The most important thing, what is a foreign city building currently, is not revealed through religious espionage, thus it appears quite useless to me.
4 - The lack of atleast a few points in good relations with the AI?
Having a different State Religion is much worse, relation-weise, than no State Religion at all.
5 - The lack of temples to keep our citizens happy?
Luxurious resources. Secure as many as possible, as early as possible.
I don't play "atheistically", I do race for the later Religions. Also, all of the above are related to my personaly single games and the general strategies I use there. I am fully aware that our Demogame is unlikely to be played the same style as my single games, and I am both willing and prepared to adapt the Research strategy to other aspects of our game.