It's just part of the culture here in New Eden. There is a long history behind that spans 10 years. Apparently a lot more people hate respecs than originally thought. There is a small minority of players within the Eve Online community that still want a respec system for Eve, but CCP and the rest of the community largely ignores them. And considering that the Council of Stellar Management now has stakeholder power in CCP and is entirely player-elected, all of the elected council members were voted in by players who are mostly against respecs within their game.

Of course, Dust 514 already has it own Council of Planetary Management to act as its voice, but it is largely picked by CCP as a preliminary council whose task is to help CCP figure out how to setup a proper voting system so that in the future YOU can vote for whoever you like to represent you and your pro-respec interests. But be aware that the anti-respec crowd will be doing the same.

There have been a lot of good ideas on implementing a limited SP refund system. CCP has acknowledged the feedback and said they are discussing whether they will implement a system like it.

look up the 'skillback booster' post. There are ways that we can implement respecs so that they add to everyone's gameplay enjoyment.