That's a market myth. Your broker will tell you when you have held a contract to the time of first notice or intended delivery. At that time you will get out. You won't have to worry about the cattle on your lawn. Some spreads are more risky than flat positions and other spreads are less risky.
Trading is a risk no matter what.
The greatest risk is your own emotion and lack of knowledge. Q. I've seen ads that tout hundreds of percent return, minimal risk, small stop losses and fantastic track records. Investigate before you invest. Many of these ads are tricky, false and misleading.