Let me be the odd one out and disagree. I always loved Venus-Jupiter-squares! Loved loved loved However, the problem with Jupiter in square or opposition is, it just, it gets TOO MUCH.
Much like Uranus-square it pumps up the volume so much, it sometimes can have disastrous results. It is like blowing up poor Venus until she explodes. Or implodes depending on Venus.
Personally for me, yes Jupiter-aspects have that genuine uplifiting effect, certain Uranus-aspects can have as well like Uranus to Sun, Moon, Mercury, Venus, Mars, ASC (though Uranus to Moon might only be fun for me, cause my Moon is in Aquarius; a scorpio Moon or Taurs Moon might not be so keen on that. lol)
The guy who has the most uplifting influence on me, we have a T-square including both Jupiters, it is amazing though how energized and uplifted I always feel in his presence.
His Jupiter: 10 Virgo
his Mars: 11 Virgo
his Amor: 9 Virgo
my Jupiter: 11 Pisces
my Ceres: 9 Pisces
his Eros: 8 Pisces
his Mercury: 9 Sag
his Musa: 9 Sag
my ASC: 7 Sag
my Neptune: 9 Sag
my NN: 10 Sag
But in our case there is a mutual reception going on with that T-square, and we both have a Jupiter-square natally (mine is to Neptune, his is to MErcury, interestingly both are 3rd house rulers natally).
The mutual reception is between his Jupiter and my Mercury (though it is not part of the T-square) and my Jupiter and his Neptune (though it is not part of the T-squrae - but they are conjunct each other and both Suns, it is really fun).