Yeah, too much negativity on this thread.
Tesco can bring many benefits to the toon- and that's without any argument. (24 hour fuel for starters...not to mention all the ingredients I often require and can’t get- either in the existing Tesco or the Coop! fresh coriander being one example- "due in on Monday when the delivery is made"- very good, but today is Saturday and I need it for dinner tonight! should I just wait then???!!

)
Whether you choose to use them is up to you. If you feel local fishmongers/butchers/florists/ etc etc will be put out of buisness then continue to support them- in fact, make more effort, (much more)- you'll keep these people in a job. Tesco won't care either way.
I live in Glasgow now (but have been fortunate enough to travel round about the world………and be Born & bred in the toon)- quality suppliers supplying local produce at reasonable price will always be supported (as I’ve seen on my travels). If, as a shopkeeper, your quality is poor/ price is too high/ etc, then you can hardly blame people for going elsewhere, can you? If another (new) independent shop opened in the town, in direct competition to an existing shop, which offered quality/ low price etc, would you complain????? I think not.
I know Tesco have a bigger supply chain and therefore can sell goods cheaper- but in the case of certain products (I’m thinking Fish/ meat/ cheese especially)- Tesco will not be supplying locally caught/ slaughtered/ produced/ produce- if you feel that strongly, go to the places that sell them (I do), regularly, and support them- higher turnover of stock will mean they have a better position when they negotiate price(s) . I have a Sainsburys/ Morrisons/ M&S within 2 mins walk, and an Asda 10 mins drive away. I still go to the independent Butchers for my meat, the Fishmongers for my fish and the grocers for my veg. I don't buy Flowers very often so I don't know where to go for them locally

but I could easily find out if I did.
sorry for the long post- I just think Toon people need to be a bit more forward thinking in the long term.
bottom line - if no one shops at Tesco they'll close it/ move to smaller premises. if no one shops at the local Butcher/ Fishmonger etc, they'll close it- will they move?
Vote with your wallet/purse- but stop complaining!