Best item to own 2,000 years ago

If i were to live 2,000 years ago I think that it would be best for me to own a horse. The reason that I would choose a horse is because I'd prefer to own a horse rather than a cow or a dozen chickens. Sure I'll be able to get eggs or milk but I figured being on a horse I can travel and possibly find a place to trade something for those items or find someone whose willing to make a deal. But without a horse I couldn't travel to find out and have a possibility at doing so. Also I would not want to just sit around in one area all the time or on a small farm with the same few people. I would want to have a way to travel and get around and see the world. I personally feel as though without a horse my life would be to boring being transportation less so this is why I'd prefer to own a horse over a dozen chickens or a cow.