I do, and so do 97% of climatologists,[1] according to a recent survey.
And your evidence isn't evidence at all; it's just falsehoods and partial truths that you typically hear from the deniers.
A. Orbital changes, called Milankovitch cycles, and not the sun, are likely the cause of any climate change seen on Mars.[2] The Milankovitch cycles are also likely responsible for the beginning of ice ages and interglacial periods here on Earth as well.
B. Jupiter doesn't even have ice caps and there's no evidence that Jupiter is experiencing a "global warming". There is, however, evidence of warm spots on Jupiter, or rising storms. This is as likely to be local events as to be a global event. Also, Jupiter produces its own internal heat which affects climate more than any forcing from the sun. Climate on Jupiter is poorly understood, but this should not be used to deny climate change on Earth.[3]
C. The sun is not getting hotter. A 2006 study and review of existing literature, published in Nature, determined that there has been no net increase in solar brightness since the mid 1970s, and that changes in solar output within the past 400 years are unlikely to have played a major part in global warming.[4]
D. I'd feel like we were exploiting our children and grandchildren if we don't deal with this problem at this time.
Edit, I don't know where thg got his facts and figures from ("41% of climate scientists believe"), but it wasn't from the study that I linked. The problem with having a conversation with the deniers is that they often simply make stuff up.