Care to elaborate on that? I'd say it's perfectly suitable for online shopping, especially recently with relative low volatility.
Also, many retailers would disagree with you, since there are quite a few that have implemented Bitcoin payments and they've not removed it for years now.
The list of businesses accepting Bitcoin is growing, maybe not as fast as everybody would like, but slowly it's winning over even large corporations.
And for OP, having a list of places that accept Bitcoin, especially large retailers or service providers is always good to mention when you talk about the benefits of using Bitcoin. No point in talking about benefits to a regular person if you don't provide him with practical use cases.
Merchants will add bitcoin as a payment method because of the publicity it brings to their business, and to capitalize when bitcoin increases a lot in value and bitcoiners want to spend their new riches.
Bitcoin was not designed for online shopping like, for example, Paypal, bitcoin is slow and has no consumer protection, if you want to be scammed by strangers over the Internet you should shop with bitcoin.
Paypal was designed for ecommerce, it has buyer and seller protection, it's fast, and very easy to use.
By the way, it doesn't matter the merits of bitcoin as a currency, the same way it doesn't matter the merits of euro or dollar being used in Paypal, I'm speaking about payment systems to be used in online shopping.