Personal use - buy (at least you enjoy low interest rate for couple years and save the money in rental..... but really have to calculate the risk - and save money if interest rate goes up, you need to put in the money that you save up for several years....)
Buy the house doesnt mean you stop the project, you still need to save money to looks for future use....
investment - wait (if you have already earn before that you can wait without doing anything) and look for other sectors (as the house price will not go up 10-20% in every year)
i just think, if you can calculate your risk/ income - anytime can buy ...