I bought my house online
... well not really, but it all came down to receiving and reading an email after subscribing online to a particular agent's mailing list
Almost everything that involves me parting with my cash has an online element
- learning of various "instore" bargains, financial/money-saving tips, banking and utilities virtually 100%, home/auto insurance 100% (especially since Quidco

).
Prefer not to purchase normal food online as I'm one of those obsessives about freshness and a resonable SBD/UBD/BBD (always grab items towards the back of the shelf

) which I wouldn't trust a shop-employed picker with .... but occasional special provisions or vino, I certainly have.
Clothing - usually grab quality bargains galore from US trips and outlets at Bicester Village and Braintree Freeport.
If it saves time and money (after Quidco cashback

) but doesn't compromise on quality it's a no-brainer for me.