That provides an additional degree of comfort. If you confine your trades to just technical considerations, fail to set stops, and the stocks do not perform, you could end up with a large portfolio of junk that will be painful to dispose of. In trading you should understand that if you are not selling it, you are buying it. Positions need to be watched like a hawk. You should note that trading is more about hitting singles than home runs.
Turnover is massive and recordkeeping a challenge.
Unless you are getting good trade execution, very low brokerage rates, and tremendous recordkeeping, you should not even entertain trading. A critical failing of many investors, including seasoned investors, is that they do not set and adhere to stop losses. A cynic once suggested that an investment is a short term trade run amok. It is easy for finite trading capital to be absorbed quickly by losses. That's why stops are critical.