what's wrong with staying in a hdb flat?

my wife and i are both 32 this year. my own p.a salary is in the 200-210k region. wifey about 170-180k. so combined we are looking at ard 380k p.a.. staying in 4rm hdb. investment funds worth ~$1.1million now. 1 BMW 525. 1 cute baby girl. happy and content.

just stay in hdb and be happy lah.