... What's wrong with multiple tabs? We use 'em all the time. Excellent time saver and file manager.
Absolutely nothing is wrong with them. They can be a very useful tool if you need them. However if you do not use them (read - have no need to use them) then they merely cause the drawing to bloat in size.
I never have more than 2 or 3 tabs, frequently I use only 1.
If they bug you ... delete them ... there is no law against it ... there aren't even any good reasons to keep them if you have not changed you standards since R14.
The last company I worked for had not updated their standards since '93 they did not use tabs...ever. When I introduced tabs into the mix, with A2k, production came to a screeching halt because all of the programming we had in place had to be rewritten to accommodate the tabs. Many of the programs could not be made to work properly (or rather how they expected them to work) so we abandoned them all together.
I have never looked back...instead I use a tabbed window for multiple files.