In some cases. After my last episode with acid (or whatever was on the blotter, not sure if it actually was acid or not, although I'm more and more sure that it was just ridiculously powerful, high-dose) and my near-panic attack (which, now that I look back, was totally unfounded) I've been leery of acid, but then again it doesn't mean I won't take it again.
As for salvia, it's a bit of a frustration for me. I've only done it twice, and have not had a full breakthrough quite yet, where I get a truly full experience. Plus, there's no afterglow, just anger and resentment along with (in some cases) a vengeful attitude toward anyone that rubs me the wrong way, joking or not. It's a drug that has definitely caused me the most frustration, and I'm determined to give it as many tries as it takes (I am well aware that one cannot simply force these things, playing with psyches, especially salvia, can be like playing with fire with your temporary sanity) and if the drug finally defeats me and bests my patience, then so be it for salvia. I may not be one of those people that can have a fulfilling experience. However, in the right setting, with the right people, I can probably do it and not get the extreme resentment of every living being around me afterwards. I attribute my first experience (the trip itself was fun, but afterward I was on edge and I permanently lost some people's friendship, at least to the scale we'd had it before) to the wrong mindset and a tense setting afterward. The second time, I had the right mindset, knowing full well what I was in for, but the circle I did it in had never done it before, and they therefore had the wrong mindset and setting going on. What frustrated me most about them was their absolute disrespect for the drug, and their usual bullshit which sometimes I wonder why I bother to put up with.
Rantings on salvia aside, I've got roughly 4 grams of shrooms (although, they'be been sitting in a drawer for two weeks...) set aside and I'm waiting for the opportune moment to consume them, and I see such a time coming up, but my window of time is rapidly closing.
So, in short: yes, to an extent.