[quote TheDailyCarbuncle]@Bikingbear because at a certain point, a lack of young people and an over abundance of older people becomes a serious economic problem. On a very basic level you need people who are starting out in their careers as much as people who are established - there needs to be a pipeline of new blood in every business. 'Overpopulated' as a lazy term that sees people as numbers - the composition of the population is important, including age, skill level, medical need etc. A population that has a very high number of older people who don't work and who have high medical need and a very low number of working, tax-paying young people will struggle massively. In order for there to be young adults available in twenty years' time, people have to be having babies in certain numbers now. If they're not, the young population will not keep up with the older population. It's already a serious issue in Japan, where the birth rate is extremely low. The obvious solution is to bring young people in from other countries, but people are such fuckwits about immigration that they'd rather tank their economy than admit that foreign workers are vital. The NHS already relies massively on non-UK born staff.
The lack of a strong, working-age population can decimate a country. Just look at Ireland post-famine or any African country that was plundered by colonists. It can take generations to recover. There seems to be an assumption that the UK will always have inward migration but post Brexit there may be a huge jump in people leaving and not coming back. That combined with a low birth rate can spell huge problems for a country. People seem to forget that one of the basic things needed for business is staff - no people, no business.[/quote]
There won't be an abundance of old people. Life expectancy is stagnating. The housing crisis, it's impact on mental health and the related physical health consequences, is undoubtedly contributing towards that.
We have hundreds of thousands of redundancies, and people already out of work.
Instead of continuing to exploit cheap labour (British born or not) we need to start paying living wages, provide decent working conditions, and offer access to stable affordable housing.
Also why assume people will want to keep emigrating here? There are more attractive alternatives.
Longer-term, robots are going to take lots of jobs (another reason why we need to look at universal basic income).