inflation definitely plays a part but i think we need to remember that on the one hand there are expenses most people now consider 'basics'/'necessities' that were not necessarily the norm in the average 'middle class' budget 20 years ago-cell phones (only about 50% of the public had them and definitely not all family members extending down to kids, yup it's somewhat of a trade off for loss of landline expense but much more expensive month to month). internet in one's private home was still pretty rare with only about 20% of u.s. homes buying in, and yeah cable was popular but it was still only used by about 60% of the population and more often than not it was the more basic level programming packages vs. what it seems most folks speak to having today.
so on the one hand you've got a budget that likely benefited from some fewer/lower expenses BUT anyone who owned a home 20 years ago and was paying a mortgage on it was likely paying at or (more likely) WELL ABOVE what people are complaining about being horrific interest rates today-the lowest interest rate during the 30 year period leading up to 2003 was IN 2003 during a couple of months when it got down to the high to mid 5's but it was generally higher, peaking at over 14.6% in 1984. starting in 1971 rates were around 7.3% and kept rising up to a peak of 18.3% in 1981 (we were THRILLED in the 90's to get a 'great' interest rate on our first home of over 10%

). homes were less expensive yes but wages were lower as well and those interest rates were a killer.
i guess what i'm trying to say is-there have been financial challenges across the decades and what might appear to have been easier times years ago had their own obstacles.