People who support radical change have hijacked the word "conservative" just as those who support extremism in religion have hijacked the word "Christian."
Many, perhaps most, of the engineers and scientists I know are instinctively conservative. They want to build on the past, not toss it out. As Edmund Burke wrote, they have the disposition to preserve but the ability to improve.
True conservatives also want to conserve the earth; it is no accident that the word is closely related to "conservation." And when science comes in conflict with religion or traditional belief, the first instinct of conservatives is to defend the old order, but after science prevails, as it did by 1926 in the matter of evolution, conservatives defend the new "old order." They do not seek to return the 21st century to the time of the robber barons of the 1800s.
The problem is that true conservatives--the ordinary people you live and work with--have allowed extremists like Limbaugh run the so-called conservative agenda because they see these loudmouthed firebrands as helping them hold back too-rapid change. In this, they resemble the Junker class in Germany that despised Hitler but supported him because they thought that he and his own brand of firebrands would hold back socialism.
If the stranglehold that extremists have on today's U.S. Republican Party is ever to be broken, it must be broken by true conservatives in the tradition of Burke, Churchill, Eisenhower, and the first President Bush. Until that is done, they have no real choice except to stay home or vote for the Democrats.