We really don't talk enough about the tragedy of Odysseus killing suitors.
They were not strangers or some kind of barbarians. They were his friends' children, he knew them and loved them. In other life they'd have been his son's closest friends.
Penelope knew them since they were kids. They spent time in their palace. We can assume Penelope and Odysseus loved inviting them, wanting kids but not having their own, so they enjoyed their company: playing with them, teaching them, feeding them. They probably were happy to introduce Telemachus to them when he was born, enjoying the thought that even if they don't have more children, Telemachus will still have many older brothers.
And then Penelope watched them grow older, she watched them become ambitious, watched them, who she knew as children, come to her palace to marry her, watched them flood the palace and waste Odysseus' wealth (Odysseus would invite them and feed them himself once), watched them grow wary of Telemachus as he was getting older, watched them become more and more impatient with years. She watched this and she watched her own feelings change. She used to love them, she used to enjoy hearing their laughter in the palace, she used to order slaves to prepare best parts of meat for them, and then she couldn't bare the sound of their voices, couldn't stand them wasting all the food, she came to hate them with all her heart, even though she could never forget how happy she was once to host them at Odysseus palace.
Odysseus remembered them as kids eating from his hands, he remembered how Penelope enjoyed the childish stories they would tell her, he remembered them as children he loved and trusted, he remembered them crying on the shore looking at the ships when he was taking their fathers away. Then he returned home to see that the children of his friends who he all lead to war and who he all lost one by one, some of whom he held as they were dying maybe even promised to look after their sons at home, feasting on his wealth, abusing his wife and threatening his son.
Odysseus lead their fathers to death and then killed all of them himself.
Penelope watched them as they changed from infants to boys to men and then to dead men. She loved these boys and grieved for them, she hated these men and felt relief to see them dead.
We need to talk more about suitors.