Ok, Firstly apologies if this is a stupid question.
I am on a trial offer of 1Password and find it quite decent.
Prior to this I kept my passwords unencrypted on a gmail drive but that gmail address I've never used on any other website for signups or mention to anyone,the gmail password itself is quite strong with 2fa.
I only access that gmail on my computer or on my phone.
So, why is my gmail approach less secure than paying and using a provider like 1Password ?