There are homeowners that would like to have a larger/nicer home but are patiently waiting for the market to improve. A frequently heard objection is that they can't sell their home for what it is currently worth.
Buying up in a down market is actually advantageous because while you might get less for the home you're selling, you're also getting the larger home for less. For instance, if you had to sell a $200,000 home for a 10% discount, you might feel that you left $20,000 on the table. However, buying a $300,000 for the same 10% discount would put you $10,000 ahead on the sale and purchase.
The other obvious matter is that when the mortgage rates increase while you're waiting for the market to improve, it dramatically increases your cost of housing with higher payments. The cost of housing is affected by price and mortgage rates.
To accurately evaluate your current options, you need facts and assessment tools that will provide you the information to make an informed decision.