If you want a President that will, do his damndest, to make our government work better for the American people, and not the corporations, vote for Bernie.
Anyone today, who still repeats "but he isn't electable", or "we'd be risking a Trump presidency, so Hillary is the safe choice", hasn't been paying attention, as Bernie does consistently better, than Hillary, and by some margin, in GOP matchups, where he wipes the floor with Trump, and does well against the other candidates, too. On the other hand Hillary, also beats trump, but by half the margin, and she actually loses to some candidates. What this could ultimately mean, is that if Trump is the GOP nominee, Bernie would win "yuge", and likely retake the Senate, and makeup good ground in the House. Hillary wouldn't win anywhere near as big (yay, I must go out and vote for four more years of Washington politics as usual, where crony-capitalism is the only business in town...), so, very much like Obama, in every conceivable way (TPP; she, of course, actually still loves the corporate "wet dream" giveaway), she would be stimied by the GOP (the only policies she could even hope to pass would have to be GOP friendly, i,e. include tax and/or spending cuts).
Classing Bernie as a "socialist", is bogus, as he is absolutely in favor of a well regulated capitalist economy, but, he, like the overwhelming majority of Americans (including you?), would do everything in his power to combat crony-capitalism, for example, instead of subsidising corn production, so corporations can maximise profits, by selling us cheap, nutrient dificient junk food, he would promote the growth of fresh fruit and vegetables, in combination with sustainable farming methods (the likes of Monsanto would become yesterday's failed science experiment).
The only "social" programs he's in favor of, such as the widely popular Social Security and Interstate Highway programs, are ones where it is more cost effective, for the American people, where these programs are run efficiently, by the government, on a non-profit basis. Any idea that a government run program can't be run efficiently, is complete rubbish; it simply requires top-down resolve to ensure we are getting value for money, and if not, we hire new people, just like you would in the private sector.
The bottom line is, a vote for Bernie, in the primaries and beyond, is a vote to say "We wan't our Democracy back!", and it's long overdue that, the American government started to truly represent what's in the best interests of the American people, and not Wall St., the corporations, and the super rich.
If the American people vote to reject this truly "genuine guy", who has and would work extremely hard for all of us (74? That's the new 54, and did you know Bernie was Captain of both his High School Cross-Country and Track teams?), no matter whether you're a woman, a man, black, or white, gay or striaght, and instead vote for the Wall St, darling, Hillary Clinton, who still wants to maintain the disastrous war on drugs (inc. marijuana), with four more years of government stagnation, they will have missed a massive opportunity, for at least the prospect of a bright American future.