Well, it is something like this ....... when one is getting 90-95% of the SQ (some people claim it is 100-110%) at 10% of the cost, then what is the need to invest so much for an 'outdated' technology which has been in use for donkeys years?
It definitely does not mean shooting down the AB amplification route. But, people ARE averse to change ... happens everywhere. Moreover, when someone has already procured an expensive route, psychologically, he finds it very difficult to accept that his investment has gone down the drain. So, that individual keeps on contemplating that his procurement is superior to the other equipment ........ thats a normal human attitude. Nothing wrong with that.
The same thing happens at the stock markets too. Quite a few of us do 'blind' buy deals. Blind buy means, without doing a company survey, just by momentary intuition, one buys. Once 'bought' the buyer keeps on thinking the share value HAS to go up even when the stock moves south.
No offence to anyone in here ........ to each his own.