I can only second GtE's point of view: a welldone suit, even three piece, can be quite comfortable. Especially if one is past one's prime youth and no more exactly slim. And no, it isn't always cheap, but good quality lasts a long while, to make up for that.
Must also admit I enjoy dressing old-style since I found a good deal of appreciation for it in the fair sex... Not when I go flying, admittedly, but all the more at the office. Ties are over the top though, I am already embarrassed by the amount of first-time visitors who take ME for the team-lead or even for the manager, on behalf of my occasional smart suit.