Am I a business or an Investor? Can I decide?

[Summer Segeleon]

Doing my own taxes this year (hopefully), as I usually do. I have only one property sale to claim. Can I decide on my own whether or not I'm a business or an investor? 

* Purchased in 2014, sold in 2015 for a profit. Owned less than 1 year. This was my first investment property purchased

* Never lived there. purchased with intent to sell

*Now own one another property that is under renovation

It seems easier to simply call it a business, deduct the expenses, and pay whatever i must, rather than deal with depreciating things. Is there a reason why this isn't advisable , other than the percentage that I'll end up paying