I would like to know what "They can’t bear to see us having fun" means in the following sentences:
At mealtimes I sat with Karolina and Beata, a friend from lectures. She was short and round-faced and busty, quick to laugh and quick to be frightened. She told us she was getting married right after the camp was over, to a guy from the year below.
‘You’re not pregnant, are you?’ asked Karolina, looking concerned.
‘God, no!’ cried Beata, blushing a little.
‘Because you know you cannot trust condoms,’ Karolina said, pretending not to notice Beata’s deepening colour. ‘Some of those old hags in the shops pierce them with the tiniest of needles and sell them on like that. They can’t bear to see us having fun. So really, you need the pill. If you want to, I’ll take you to my doctor. She’s a woman and she won’t ask if you’re married.’
In this novel which is set in the 1980's in Poland under the socialist regime, where homosexuality was socially unacceptable, the protagonist Ludwik (a university graduate) left Poland in 1981 to live in the United States of America. And he remembers what it was like back then in Poland, where he went to the agricultural camp (which was mandatory for college graduation). At the camp, he sat with his friends Karolina and Agata during mealtime. Agata told them that she would marry a guy from the year below after the camp.
In this part, I wonder what Karolina had said. Does she mean that old women in the shops selling condoms pierced them with needles because they wanted to prevent young people from having fun, enjoying? (This is my wild guess.)
I am an English learner from South Korea, so thank you for your patience in advance as I may not know obvious things. I would very much appreciate your help. :)