What if Old Tax Regime is Abolished?

Lot of people are anticipating that Old Regime will be let gone and only New Regime will the future; many believe it is a good move, as calculations in new regime are not complex. But here is a catch, old regime brings SAVINGS DISCIPLINE in people. To save their taxes, people developed PF/insurance kind of habits, some people go for better homes with high tax due to tax relief available, as GoI will never secure your future/emergencies; old tax regime was motivating in some or the other way for this., which if abolished will damage the middle class households economy in worse way possible