Provided you can carry the payments, what do you care?
Buying now: interest is deductible on itemized taxes, can refinance when rates drop, build any home value appreciation
Buying later: your rent money is literally doing nothing for you, you've missed home value appreciation, and you need to pay more for a home in the future
Systemic home valuation decreases is the bigger threat to watch for (i.e. keep an eye on prices:incomes, etc).