When flight attendants say that they are tired and they would rather sleep, believe us, they mean it. Yes we do understand that all jobs are tiring at one point but that of a flight attendant is more than just being tired no matter how glamorous things may seem. It can be tiring both physically and emotionally and this is something we should understand why they say it is a sin to disrupt a flight attendant's sleep after a day's flying duty.
First and foremost, contrary to what others may think, the job of a flight attendant does not only entail serving chicken/beef and doing safety demos that makes it tiring, it's definitely more than that. We also have to look at other external factors why being a flight attendant is indeed tiring and draining and these include the working environment, the different time zones, and unforeseen situations.
When flight attendants say they are tired, they mean it.