Справедливо ли добиваться высокой цели преступными средствами?

1) I have not got a brother - I haven't got a brother
2)My grandmother does not listen to rock music - My grandmother doesn't listen to rock music
3)His sister cannot take photos - His sister can't take photos
4)Her grandfather has not got a pet - Her grandfather hasn't got a pet
5)Mag did not play puzzes yesterday - Mag didn't play puzzles yesterday
6) Our father will not watch the stars in the morning - Our father won't wantch the stars in the morning
7) Their mother was not at home at two o'clock - Their mother wasn't at home at two o'clock