Thanks for actually asking why instead of just saying "omg he's racist, he's a homophobe, etc." I like him for a few reasons.
1. He's a smart businessman and has been a successful entrepreneur since the 80s (something not nearly enough people value these days).
2. I like that he speaks his mind, and isn't overly politically correct like every other politician. Essentially, he acts like a real person, not someone that's lived a bland, repressed life their entire adult life to prevent people from having any dirt on them.
3. I like that he's self-funded and doesn't take money from lobbyists like every other candidate does (the money lobbyists put into politician's campaigns is usually paid back with favors that lead to lobbyists in industries like tobacco, meat & dairy and sugar having influence over laws passed in their industry).
4. I agree with his views on illegal immigration and how it's ruining our economy. Illegal immigrants fill jobs and don't pay taxes which is terrible because they're entering our country and benefiting immensely without giving anything back (in fact, it's estimated that HALF of the untaxed income illegal immigrants make goes back to Mexico, to their families). Taxes fund SO MANY THINGS like the salaries of all government employees, construction and repair of the public roadways we drive every day, Social Security and Supplement Security benefits, Medicare and medical research, national defense and the salaries and equipment of all military employees, domestic programs that provide for those in need, paying off our national debt, benefits for veterans, public schooling, legal immigration programs, law enforcement, water and land management, preservation of wildlife and humanitarian programs and economic assistance for developing countries.
I'm not saying he's the perfect politician. He definitely has his flaws, for example, I don't like how he said it would be harder for media outlets to talk crap about politicians if he got elected because that goes against free speech and people expressing their opinions. So again, I don't think he's perfect, but I think he's a better option than Bernie Sanders (who will say anything to get votes, even if it means apologizing for slavery, which he (and no other living person) played a part in and who is 74 and doesn't appear to be in the best health) or Hillary Clinton (who lied to the public about using her personal email for confidential matters and wants to extend Obamacare to illegal immigrants, something that would cost citizens and legal immigrants a f**king fortune).