Not when the catalyst is me, because I base my ethics on the theory of rights and obligations, not on mere outcomes. The distinction between act and omission important in rights theory.
I respect the negative rights of everyone to their life, liberty and property. Negative rights create negative obligations, the obligation to refrain from acting in some situations. That means that I will not, by action, deprive another of those things. Positive rights would create positive obligations, the obligation to take an affirmative action. Under such a rights system, other people would be morally compelled to act to satisfy those rights.
I favor the recognition of universal negative rights rather than positive ones, because everyone’s negative rights can be upheld. If everyone has those three negative rights, their rights will never conflict and require that one person’s rights are abrogated to another’s. The rights require only that we all refrain from certain actions, and it is possible for us all to do that. If, however, we adopted a system of positive rights, where a person’s “right to life” meant not that I must refrain from killing him but that I must take affirmative actions to sustain his life, then we face conflicting rights. I would have to be dispossed of my rights to life, liberty or property to satisfy another’s rights to such – both could not be satisfied because they directly conflict. A universal “right” hardly deserves the name if it cannot actually be satisfied for each person who has the right. Therefore I do not believe in positive obligations. I may still choose to give others assistance, I view it as morally permissible even though not required, but they will take assistance as my gift to them not demand it as their “right”.
Thus I care very much about other people’s rights, for that is the basis of my ideology and the guidepost for my moral actions, but I do not use their pleasure and pain as the factor for making decisions. That does not mean that I ignore it, because in the zone of morally permissible actions (those that are neither obligatory or forbidden), I may seek to consider any and all factual circumstances that will impact the result of my decision. My friends and family are valuable to me, and so I would take certain steps not to increase their pleasure (or reduce their pain), so as to maintain a relationship that I value. As for everyone else, I would restrain my actions to respect their rights where the decision would affect rights, and in the remaining zone of permissible action I would attempt to maximize the gain in value (I probably have little to gain from causing pain to random people, and much to lose in valuable reputation, for instance.)
Thus you can see why I chose the examples I did in my previous post, and how I arrived at my decision in each hypothetical.