I think that everyone should follow the commandments because Jesus died on the cross for us and we should respect and follow what he would want us to do and the rules he would want us to follow.
1. You shall attend Mass on Sundays and on holy days of obligation and rest from servile labor
2. You shall confess your sins at least once a year.
3. You shall receive the sacrament of the Eucharist at least once during the Easter season.
4. You shall observe the days of fasting and abstinence established by the Church.
5. You shall help to provide for the needs of the Church.
The fourth Church Commandment is commonly remembered as abstinence from meat on Fridays, and abstinence-plus restriction to one meal only on Ash Wednesday and Good Friday. The details are quite various, including some countries to allow for a different way of penance on at least ordinary Fridays. The whole of Lent is of a penitential character, though no specified practice is required.
As early as the time of Constantine I, especial insistence was put upon the obligation to hear Mass on Sundays and Holy Days, to receive the sacraments and to abstain from contracting marriage at certain seasons. In the seventh-century Penitentiary of Theodore of Canterbury, we find penalties imposed on those who contemn the Sunday.
The precepts here implied came to be regarded as special Commandments of the Church. Thus in a book of tracts of the thirteenth century attributed to Pope Celestine V, a separate tractate is given to the precepts of the Church and is divided into four chapters, the first of which treats of fasting, the second of confession and paschal Communion, the third of interdicts on marriage, and the fourth of tithes.