At the end of the day, it boils down to money and the RSPCA simply cannot afford to keep/house 100s of 1000s of animals, which the public may bring to them. Euthanising them is a necessity, otherwise the RSPCA as an orgnisation would go bust and cease to exist.
Bull**** unfortunately. The ARSEPCA* is a multi-million pound
industry happy to splash out £22 million on just one block of offices, pay £100k+ each to their board, fork out for high end cars for office staff/board, and systematically rape franchises for cash (the local shelters are franchises, the ARSEPCA itself doesn't run rescue centres!). The ARSEPCA themselves make their cash by breaking and entering, perjury and theft. This is all a matter of public and court record and the ARSEPCA has criminal convictions for perverting the course of justice.
Meantime the animals - even the healthy ones - are often put to death
before the outcome of the court case, and the owners charged for their storage and death. They make a point of picking out vulnerable people to persecute to make it easy to gain a conviction in their private prosecutions, thus securing more publicity and more money for themselves. All this is a matter of public record.
It's people who think like you (as quoted) who keep the *******s in business. It's not your fault, they're very good indeed at PR, advertising etc. The current arsepca is infiltrated by the animal rights extremists at council and board level, and has nothing much at all to do with the well meaning folks who run the rescue centres locally.
The ARSEPCA is happy to close down shelters and euthanise dozens of healthy dogs - even with offers of alternative accommodation - to save some ££. Scum, tbh. You can read much more on this
here.
*
I use the term ARSEPCA because the society believed to be in favour of animal welfare, which shares similar initials, has copyrighted/trademarked their initials and has recently been taking legal action (££) against anyone using their acronym as part of a set of words criticising them. Not for slander or libel, but for trademark infringement! As I said, scum. If they don't want folks to use their acronym, all those old folks better amend their wills ASAP...