I do believe that in a perfect world we should be confessing and communing frequently. The early Christians were people of enormous spiritual fortitude, I have a lot of respect for them and what they had to live through.
For many of us, to leap into such frequency suddenly isn't easy nor spiritually beneficial in my view. I strongly feel that by linking confession and communion together we are maximising the benefit of both sacraments. To me, walking up to the chalice in a non contemplary fasion is not spiritually beneficial.
We also have to remember that people establish certain rhythms for their sacramental life, and we do have spiritual fathers that help us find that medium for ourselves (I never said that it is something that we should only do alone, based on our whim), the same concerns fasts. Some people will be able to give up meat but not fish. Others may be strong enough to get rid of not just fish and oil but make an even more severe restriction, i.e. eat only bread in the morning, etc. Others, meanwhile, might only be able to give up meat and even that will be not easy, but at least it's a starting point. Yet at the same time a spiritual father is there to make sure you're 1) not being too lax about your life, and 2) not trying to jump too far too fast.
People who do the latter risk falling into the spiritual state known as 'prelest', or they can simply become frustrated by the task they've imposed on themselves and lapse into despondancy.
Say a person communes every week. They get used to the fact that they are communing every Sunday. It can fall into a routine, and a person who isn't spiritually strong enough to be mindful and isn't taking the sacrament with "fear and faith" may begin viewing the sacrament more like the antidor.
I know one person who used to commune regularly, this person no longer goes to any Church. When I spoke to him, he didn't even understand what confession was for - and this was an OCA parishioner where confession is not linked with the sacrament. This kind of spiritual neglect happens too often, we don't treasure what we have.
I don't think, Serb, that I disagree with you so drastically. It's not a big deal, I don't have a problem with people who commune without confessing every time. I'm not insisting that this has to be the rule for everyone everywhere.