The major worry in removing credit from 'poor' people is that they will simply get money from loan sharks/doorstep lenders.
I was bankrupt in 2007. Exactly 7 years ago, as it happens. DH and I had both accrued debts from attending university, we had a surprise baby and although I went back to work after maternity leave, we couldn't afford childcare in the longer term (my Mum was babysitting 30 hours per week), and DD1 was incredibly difficult to manage. She was later diagnosed with quite significant special needs, but at the time we didn't know.
Because we had consolidated debts, our financial histories were quite intertwined, so although I only had around £6k debt myself, we were advised by a leading charity that the safest way to proceed was for us both to declare at the same time.
We did so, and saw an OR who was kind and fair. He could see that we had no assets (rented accomodation, no fancy cars, no property or goods of any value) and we were of no interest to him, so he didn't impose an Income Payment Agreement.
DH was discharged after 8 months and I was discharged after 10 months.
We have never taken on debt since. The closest we've come to it, is asking the garage in advance to let us pay the bill for planned work over 3 monthly installments.
Life is a lot different to how we planned it. We have one DD with significant SN and one DD who is very vulnerable and is just on the edges of the diagnostic pathway, if we can ever get anyone to see her. Plus a DD who is NT.
I was a nurse. I can't work now because the course that would give me back my registration requires that you do all shift patterns, and I can't do that because DD1's SN transport will only drop off to our home address and I can't get childcare at 06.15 in the morning, which will have the girls, bring DD1 back to our home address in time for her bus, then take DDs 2&3 on to their school.
The cost of childcare for a child like DD1 is around £15 per hour. More than I would earn, before taking into account childcare for DDs 2&3.