Calling Someone At 3am

hi there i just woke up to write this blog just because i was woken up by a lady friend calling me at 3am. am still confused why someone has to call you at this hour. there are some of the things we can understand but some can not be explained until you make your point short and clear... this are some of the things i can understand :

• if you are in trouble or sick
• if you have no place to sleep
• if someone dies :(
• if you are waking me to open the door for you
• if you slept with Jessica Simpsons  
• etc... 

i think that's all for me but you can have more than mine or even have no reason to pick that phone call.. this are some of the reasons i don't understand :

• you call and don't have anything to say
• you call to tell me about a dream 
• you call and you are just a friend who we talk less often 
• you call to tell me how the party rocks 
• and many more the list is endless ... 

i would like to here your views on this situation and how you can deal with it and since am a dude i would like to know why ladies like doing this ... have your say in the comment section