This might have been posted years ago but I don't recall:
The Ten Commandments for Amateur Astronomers
1. Thou shalt have no white light before thee.
2. Thou shalt not love thy telescope more than thy spouse or thy children.
3. Thou shalt not covet thy neighbor's telescope unless it exceeds thy own aperture twofold.
4. Thou shall not visit Astronomy.com on company time. Reserve this boon for breaks and lunch lest thy employer smite thee.
5. Thou shall have at least two telescopes so that thy children and spouse can entertain themselves whilst thee are engaged with the firmament.
6. Thou shalt keep the holy days of meteor showers, transits, eclipses, and conjunctions free of labour and distractions of an earthly nature.
7. Thou shall not reveal to thy spouse the true cost of thy telescope collection: only the individual components and that shall be done with great infrequency.
8. Thou shalt not buy astronomical equipment as "family" or "its educational" Christmas gifts when you know thou art buying for thyself.
9. Thou shalt not deceive spouse or family into thinking that ye are taking them for a romantic Saturday night drive when thou art heading for a dark sky site.
10. Thou shalt not store thy telescope in thy living room, dining room, or bedroom lest thou be sleeping with it full time.