There is no Mitzvah to live like a Pauper if you can afford better and in fact many say you should live better.
For the simple fact If one say, Well I had an inexpensive wedding with only 50 people with a shmogasboard, why should I contribute to Chanasas Kallah for a big fancy wedding, simpler weddings shoudl suffice.
or I if I can eat day old hard stale bread so can the Annim and they deserve less tzdakeh because they are eating “too fancy”