Board Thread:General Discussion/@comment-31283382-20140611172614/@comment-24519434-20140923235751

Gacsam wrote: Firstly, balance - with white being a part of Ichigo, his soul is kept balanced, like Isshin kept Masaki's soul balanced, if you were to take out White you would break that balance, therefore causing soul suicide.

Lastly, Rukia's powers were removed by Senka, which should've and would've sealed Ichigo's spiritual pressure, thus rendering him unable to even see or sense spirits, had Urahara not intervened.

Soul-Suicide is only when introducing a Hollow to another soul to make that soul more powerfull.

Senka wouldn't have "rendered him unable to even see or sense spirits" he is (technically) a Quincy and would have the ability perceive them anyway.