I have friends who train in pekiti tirsia kali, and given what I have seen, I would prefer not to have to go up against people like them even with a knife in my hands, let alone barehanded.
This is a very true statement.
Needless to say, I truly wish most aikidoka, whether they be Yoshikan, Shodokan or whatever, but especially Aikikai, re-evaluate their goals in their training.
Aikido is not a complete system, it seriously lacks responses to contemporary methodologies. One must integrate striking/kicking, grappling and knife/stick based arts into their Aikido training, in order to be a well rounded martial artist. Firearms is another area all together.
If you have no real-life experience in any of these areas, do not delude yourself, your peers or your students that Aikido is martially effective in all situations.