I have to disagree with anyone who said English was hard.
You certainly never learned French then.
First of all, French has a lot of different accents and letter that aren't used at all in english : ? ? ? ? ? ? ? ? ? ?. (EDIT : the letters don't show for some reason, sorry)
Secondly, very often (if not always) not every letters in a word are pronounced.
ex : the word 'sept' which is pronounced like 'set'.
There's also a lot more different sounds in French than in English, like u, ou, au, an, en, ein, ouin, etc...
And Frankly, I've never met any foreigner who was able to pronouce all of them correctly (I didn't say perfectly I said correctly.) Most English/American people I've met in Switzerland (they were learning French) weren't able to make 'dessus' and 'dessous' sound different. (under and above).
The pronouns (the this that them who I you him/her it, etc...) sometime change according if the noun they go with is 'feminine', 'masculine', 'plural feminine' or 'plural masculine'
The adjectives changes if the noun they go with is 'feminine', 'masculine', 'plural feminine' or 'plural masculine'
ex : sing: une belle table (a nice table)// plural: des belles tables (some nice tables)
There's much more grammar rules and exeptions than in English.
Even if there's a lot of irregular conjugations in English, there's much more Tenses in French and there's as many irregular verbs as there's in English (if not much). Also, the verbs change according the pronoun (I, Thou, Him/Her, We, You, They : they all change the verb in a different way)
ex :
EN To Do
I Do
Thou Doest (Dost?) (I'm not sure about thou since it's not used anymore)
Him/Her/It Does
We Do
You Do
They Do
EN Faire (to do)
Je fais
Tu fais
Il/Elle fais
Nous faisons
Vous faites
Ils font
other ex :
Nous F?mes (We did) is different from Nous Faisions (We did)...
Also it's completely false to say that English's grammar is more complex than French's. They're basically very very similar (if not the same). As for having studied English for at least 10 years I can assure that every grammar rule I've seen in English either exists in French or has a close equivalent.
I'm not saying French is the hardest language but it's certainly harder than English.
Learn French and welcome to hell.