Don't say nobody. It is possible to build a robust system that can trade unattended. But, there are many details and edge cases that you must program for. I suggest running live for awhile on a paper account.
I would not run a system in life trading without a stop loss. Yes, the profits in a backtest are bigger when you omit the stop loss - I know that phenomenon. But this could indicate some instability of your system. Another problem is that one year backtest is really not enough. It's not only the number of trades, it's also the fact that market behaviors often experience long term changes and make a strategy unprofitable from one year to another.