I'm not going to rise to the "jealous" comment... You don't know anything about my situation past, or present.
The reason why carers can't be away from work and still being paid is because it is unfair to other employees who do not get the same paid leave. Yes, I know that what you are doing when you have to take leave to fulfil carer or parental responsibilities is not fun but what the person left at the office sees is they both "get paid the same salary but I work an extra 2 days a year" or similar.
There is also the other matter of who is paying for this. Businesses can't afford to have people on the payroll who are not at work (a symptom of this is the fact that many companies have cut sick pay in recent years and introduced qualifiying periods before any is due in some cases). Some people have additional benefits in their contract which include provision for pay for carering responsibilities, but this is often covered by an insurance policy or has been built into the operating costs of the business. Obviously this is more expensive which is why it is not standard in employment contracts.
At work you have to be fair and be seen to be fair. You can't discriminate against people and one way to remove the discrimination would be to take the financial burden of paid leave for carers away from business and make it a social responsibility. In order to do this there would need to be a change to the law and give carers entitlement to claim statutory pay to be away from work. That cost would then be picked up up by the tax payer, not the employer and would remove the argument that carers are getting additional paid leave, although it does have it's pitfalls...
Statutory carers pay, were it to exist, is likely to be significantly less than what the employee is actually earning (like statutory sick pay and maternity leave are) and you would probably find people would still elect to use annual leave rather than have less in their pay packet. So probably still not the answer
Regardless of any of the above, people at work deserve to be treated with respect and dignity and should not have to go on bended knee to request what are their legal rights. Currently carers have rights to unpaid leave under employment law. Many companies do the decent thing and allow flexible or annual leave to be used instead and do so in a polite and respectful way. Unfortunately some people do not behave in that way and that should be challenged when encountered.
The issue of carers and taking leave is an employment issue. The issue of paying carers to do that is possibly a social one?