@Jamie Carter There are two ways to answer that that seem apparent to me.1) Rents are generally lower when comparing the local market to other cities that offer similar job opportunities and lifestyle; ie, general cost of living is less in this city for equivalent opportunity and amenities.

Just remember it is a life style purchase and not a investment, although it will likely appreciate till the market turns.

Funny thing is that buying a personal home is a life style decision that through out the life of ownership with payments, utilities, taxes, maintenance etc will cost,in 90% of the country, more than it will ever be worth.

I can easily afford the 6%, my lifestyle is minimal and we save 100% of my wifes full time income for REI, so this is just another way to plan for the future.

Don't use your student loans to inflate your lifestyle...Continue to live like a college student even after you graduate - have roommates, cook your own meals, buy used reliable stuff only when you really need it.

I would like to know you guys opinions: - it is renter's choice of their life style so I have no place to say anything about their living conditions, even they are abusing my property? 

@Joseph Hennis If I read correctly, it sounds like you are planning for retirement on rural acreage and these investments are to support that lifestyle...as I'm sure it'd be a challenge to do your job living rurally....in which case that makes you a cool dude because I want to do the same thing LOL.I didn't do the "what would you do" portion of your question so here's mine, maybe we share a common goal:sell property 5, so  I could have a new primary residence that I'll mention laterSell property 1 (unless it is in a super exclusive area that's going to explode in value even more in the near future making it a keeper). 

But my lender told me that the rule has changed and the deferment no longer prevents me from being hit with the debt.J Beard I need to stick with SFR because my current house is quite nice and I couldn't downgrade my wife's lifestyle by house hacking.

Lots of them fail but enough have been spectacularly successful and given me a great lifestyle.

I consider it very safe and convenient and about as reasonably secure as my paranoia will allow, without getting in the way.We can only use some common sense to store data without completely hindering our business or lifestyle.