The most important thing about crypto currencies what we can all do is to keep it legal.
There is already enough bad publicity in the media, I don't think the average user should start doing things on the boarder of legality with it.
The way how bitcoins are taxed differ in many countries. If it's not really clear, ask a local tax consultant.
we should use bitcoin for something that is good and does not violate the law, so this makes bitcoin more known, because with a good image all the facilities of bitcoin can be utilized by all levels of society, about bitcoin tax will not be a significant problem, because all products in this world will definitely be taxed, this is what makes the product legal, the tax applied I think is comparable to the benefits we can get.