Recently, I had a chat with someone that wanted to know why he should use an online trading journal vs his own trading spreadsheet. My answer was quick and somewhat brutal.
“Why drive a ford when you can drive a Lambo.”
Another way to put it:
“I’ll give you two options. The first one is free, but it won’t increase your returns. The other is paid and will most likely increase your returns. Which one would you go with?”