Why not? I don't have money to burn. I'd rather take my wife out to a nice dinner than have an 80 pound amplifier staring back at me if it adds nothing except a bunch of headroom I'll never use.
As far as I'm concerned, if all else is equal (and there is no guarantee of this, especially when discussing solid state vs tubes), there won't be a difference between a 300 watt amplifier and a 30 watt amplifier when you're never asking more than a fraction of a watt even for peak levels. so we all have to live life according to your personal strategies otherwise a fool? come on now.
Ah hell, I better stop using 92 octane petrol also.
personally, I never understood this "lowest common denominator" philosophy...
OP, take into account any upgrades you may be choosing to do in the future!