Just say why do you think that monks on 5E are better than 3E. I an really curious...
First of all, some people say that Monks are weak in 5E, or at least are on the weaker side of things. I am not one of those retards, but I am not here to defend 5E monk. I am here to remind everyone why monk in 3.5 is utter trash.
1) Monk suffers from multiple ability dependancy. Monk needs STR, DEX, CON and WIS. While monk seemingly can pick up Weapon Finese to get rid of Strength, not only you're very hungry for feats as a martial, Finese also only allows you to add DEX to attack rolls, not damage rolls. There technically are ways to get around that, but more on that later.
In 5E, he needs only three of those, just like paladin.
2) Monk does not have full BAB, and is the only martial class to not have full BAB. That makes it difficult to hit people.
In 5E, Monk is as good as Fighter in hitting people, because there is no BAB.
3) Did you know that Flurry of Blows fucking sucks? Not only it applies an attack roll penalty (and you are not great at hitting people already, because of partial BAB), it also demands that you make a full attack first. A full attack demands that you don't move that round, unless it's a 5-foot step. Monk is supposed to be a skirmisher, this is certainly implied by his increased speed, and the fact that he really can't take punishment thanks to his low AC and less than amazing HP. But Flurry of Blows demands that he remains in the enemy's face. There are technically ways around that, but more on that later.
There are no such restrictions on making multiple attacks in 5E.
4) Did you know that Monk can't multiclass? Multiclassing is a common way to get around your shortcomings as class (and boy, does Monk have shortcomings), but Monk can't indulge in it. Because of this.
Like a member of any other class, a monk may be a multiclass character, but multiclass monks face a special restriction. A monk who gains a new class or (if already multiclass) raises another class by a level may never again raise her monk level, though she retains all her monk abilities.
There are no such restrictions in 5E.
5) Did you know that martials love Pounce? Pounce is a special quality that allows you to move and make a full attack in the same round. The easiest and most common way to get it is to multiclass into Lion Totem Barbarian. Almost every martial build mutlclasses into it for one level. But not only that is quite difficult because of the above, but... Did you know that Monk and Barbarian have mutually exclusive alignment restrictions?
There are no such restrictions in 5E, but then again, Monk doesn't really even need to multiclass into anything.
6) Did you know that dex martials love Shadowblade? Shadowblade is a special feat that allows you to add DEX to your damage, if you're in a Shadow Hand stance. You can blow feats on meeting the requirements, or you can take a Swordsage multiclass to... Oh. Oh no.
Monk already gets DEX to damage in 5e.
I could go on. But I think I've made my point.