I use PayPal a lot, except for amazon and supermarket online shops who want your credit card number.
Being able to buy stuff online has been a huge blessing for me - living in the middle of nowhere and with problematical mobility.
Sometimes I feel a bit guilty about it as I am aware of the various drawbacks, but I hope I make up for it in other ways - I do not use aeroplanes for instance and recycle like mad.
Lending/gifting money to children


