Hi, I used to be a criminal barrister (well I technically still am but now I’m employed in house, not going to court or doing cases involving sex offences).
I think you have to be really kind to yourself and remember that these types of cases are really upsetting even to hear about, for all involved.
In our legal system in general, everyone has a right to a fair trial, which includes equal representation (ie a decent lawyer). Our system is adversarial so it is one side arguing against another by design, and that’s why one or both sides can come across as “arguing black is white” - it’s their job. Some other countries have inquisitorial systems where it’s more about the judge calling for evidence from each side than about the parties arguing each side. There are arguments for and against both.
Equally, it’s our system that the prosecution must prove its case so that the jury (or Magistrates in a less serious case) are sure. The same for all types of offences. That tends only to feel uncomfortable, I think, in cases of sexual offences - both because the subject matter is so sensitive and because there tends to be little evidence other than the accounts of the two (or sometimes more) people actually involved - the defendant and the complainant (as they’re called).
There not that often any independent evidence such as CCTV or evidence of other witnesses that’s completely determinative of the facts.
It’s very hard because rape, for instance, is an offence that carries a life sentence, so it would be difficult to argue the burden of proof should be lesser for such a serious offence. That said, of course the effects of it on a victim can often be described as a “life sentence” so there’s alot of public interest in making sure the guilty are (safely) convicted.
I don’t know what the answer is to this but just some thoughts about why it seems so uncomfortable.
If it makes a difference, I used to prosecute these offences more than defend, but like most barristers I did both at various times.