Age Income Demographic Make sure you define exactly who you are going afterThen make sure you know where your target is?

I very much enjoy teaching, but after teaching for 19 years, I'm not sure if I'll make it to my full retirement age of 67!  

You see anyone at any level, stage or age in life can be susceptible to being RIPPED OFF!

I am analyzing an 84 unit that I have under contract and the average age of the furnaces are 10 years old.

This is where the age old advice freshly presented by @Scott Trench is outstanding, you have to live below your means and save as much money as you can.5 years ago my wife and I bought a house. 

One in an all age community, one in 55+. 

I'm wanting to open an SDIRA for my child as I pay her a small wage here and there to help with admin activities  (envelope stuffing, etc) but would also like to use that SDIRA as a minority holder on investments so that I can help boost her retirement account from a young age. 

Your realtor should be able to find similar houses with similar construction and age to give you an idea of FMV.

I was bitten by the entrepreneurship bug at age 17, creating an online advertising business that I was able grow rapidly and used the profits to finance college.

Your niche could also be first time buyers because maybe their age is typically close to yours.