People were expected to pay a tenth of their income (a tithe) to the church.
Heretical sects (those which did not support Catholic doctrine) would be suppressed.
This question seems designed to paint a negative picture of the church. People did however recieve benefits from the church. Monasteries had infirmaries where they took care of the old and the sick, and they distributed alms to the poor. They also gave hospitality to poor travellers.
Monastic schools educated children, about one boy in ten in peasant families became a priest.
churches and cathedralss were often very beautiful, those that survive are still the glory of Europe. Their stone carvings, paintings, and sstained glass windows, were designed to glorify God and to lift the spirits. Which they still do, in my opinion.
In the early medieval period, most books were produced in monasteries, some are works of art, like the Lindisfarne Gospels, for example. Monks and nuns were often notable scholars, like Hildegarde of Bingen and Roger Bacon for example.
The year revolved around the holidays of the church, which gave people a chance to celebrate. Christmas, the most important church festival, lasted for thirteen days, from Christmas Day through to Epiphany (6th January). Other important festivals were Candlemass (ist February), Easter, Whitsun, St John's Eve (MIdsummer), Lammas (1st August), and Michaelmas (end of September). One important holdiay, Wakes Day, was the fesstival of the local parish saint, and varied from place to place. These holidays were occasions for feasting, dancing , games and sports.
Source(s):
Life in a Medieval City by Frances and Joseph gies
Life in a Medieval Village by Frances and Joseph Gies
Medieval