Really? I've been to Giru twice and both times there were queues (I even camped the second time,) I went to the first two Dir en grey UK gigs and there were massive queues (that went right around the building) and The Gazette which had a huge queue from very early in the morning - as a lot of people camped over night.
I've not been to any in the past few years so perhaps the fans have mellowed out somewhat by now.
I saw Girugamesh 2 years ago. Was it that time? I haven't seen Dir En Grey nor The Gazette, but Girugamesh was alright. It wasn't even sold out, so you could have come there around 8 and just get in easily.