Why would I want to train defending attributes in strikers?

[shwanko07]

you don't need .. like you don't need to tech GK attacking or a striker defending
yes still other attributes are important but not like main skills
my mid and ST and GK have no penalty save or penalty takers SA, you know what, i beat 2 teams in penalties and they had both SA GK penalty saving, and penalty taker SA ..
problem is if you look to their skills they were all balanced so he had 52 in defending total attributes ... mine GK had 65.. and same for my strikers & mid players, the attacking skills were far superior than his penalty takers who had more balanced skills