Damn
@2clicker beat me to it...
I am also under the influence that your problem is your concentrate supplier... Unless it was around 120°F outside "shatter" , at least true shatter, should never perform physically as you've described... Leading me to believe that the product itself was of poor quality... It's called shatter for a reason, it should break similar to a jolly rancher. One of the best judgements of quality by eye is opacity... Can you see through it. If not , it's garbage, generally, as a rule of thumb for flower ran material, now, if you use trim ran material, it's a whole 'nother beast, it can come in with a tinge of green or brownish, at which point you have to revert to the torch test, where you put a dab on the end of a dabber and hit it gently with the flame from a torch, if it sizzles or you get fireworks, you got bad shit, ideally your looking for a clean smooth melting action.
As others have mentioned, dabbing is absolutely a technique. You have to learn to properly use the setup that you have... And ironically enough, a dome and nail is one of the hardest setups to use because the nail is small and thermally doesn't act well, so it will heat up fast and cool down faster, on top of that, if you put too much material on the dabber and put it on the nail too fast, the majority of your material will melt down the nail and not vape. For new people I would highly suggest titanium domeless nails, purely for there simplicity. They are heavier and thus thermally conduct better, so while it takes a little longer to heat (~20sec.) it will hold its heat longer, and being domeless, allows for better accommodation of dab size , as generally, product loss due to runoff is almost null and void.
A pen, is simply for portability, those who don't want to carry a torch and rig, say like in a state that carries a mandatory minimum of 5 years per gram of concentrates ( * cough * NY ). While it won't offer that out of the park feeling of a properely capped rig dab will, it will still do the job, and offers extreme discretion, which for obvious reasons is very appealing to many. It's simply just your out and about setup. The rig is where it's at. As others suggested, your goal, shall you try again, is to go for something, anything, quartz , glass, titanium, Domeless is key. It's much, much more friendly for novice users. After that, find somewhere else to get your goods, or just sit down with a little vape one evening, and read some of the threads here on doing runs, and different techniques, you could easily make your own product, just as long as you heed each and every single warning, you will have nothing but smooth sailing and clean product.
And as for people hating, that's definitely not this site. This is an amazing community to be a part of with extremely friendly and knowledgeable people who are more then willing to help out any fellow vaper in need.
It truly is awesome to be part of such a wonderful community, and hopefully you come back around and give concentrates a shot, I don't think you'll be disappointed once you figure out what's going wrong